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450 American Seashells Genus Schizothaerus Conrad 1853 Shell large with a roundish posterior gape. Hinge with small cardinal teeth; lateral teeth very small and close to the cardinals. Ligament external and separated from the cartilage pit by a shelly plate. Schizothaerus nuttalli nuttalli Conrad Pacific Gaper Washington to Lower California. Plate 31Z Up to 8 inches in length. An oblongish to oval, strong, smoothish shell with a prominent gape at the posterior end. The neat, well-formed beaks are located M to % from the anterior end. The pallial sinus is very large and deep. Periostracum grayish. Common. Compare with the northern subspecies capax Conrad. Schizothaerus nuttalli capax Gould Alaskan Gaper Kodiak Island, Alaska, to Monterey, California. Up to 10 inches in length, differing from the typical nuttalli in being much more oval, more obese, and dipping downward into a well-rounded, ventral margin. This species is very common on most sandy and mud beaches in Puget Sound. Genus Rangia Desmoulins 1832 Rangia cuneata Gray Common Rangia Northwest Florida to Texas. Figure 91a, b I to 2% inches in length, obliquely ovate, very thick and heavy. The beaks which are near the oval, anterior end are high, inrolled and pointing downward and anteriorly. Exterior whitish, but covered with a strong, smoothish, gray-brown periostracum. Interior glossy, white and with a bluegray tinge. Pallial sinus small, but moderately deep and distinct. A common fresh-water to brackish-water species found in coastal areas. R. iiasuta Dall is probably only a rostrate form of this species. Compare with R. flexuosa. Subgenus Rangianella Conrad 1867 Rangia flexuosa Conrad Brown Rangia Louisiana to Texas and Vera Cruz, Mexico. Figure 91c, d I to 1% inches in length, rescmbUng an elongate cuneata, but with no
MESODESMATIDAE 451 Figure 91. Rangia Marsh Clams of the Atlantic Gulf States, a and b, Rangia cnneata Gray, 2 inches; c and d, R. flexiiosa Conrad, i % inches. distinct pallial sinus, with much shorter laterals, with a faintly impressed, large lunule, and colored light-brown inside. A rare and elusive species from marsh areas. R. rostrata Petit is a synonym. Family MESODESMATIDAE Genus Mesodesma Deshayes 1830 Like a large Donax with a prominent chondrophore. fine denticles. Mesodesma arctatimt Conrad Greenland to Chesapeake Bay. Laterals with Arctic Wedge Clam Plate 32r About I 'V2 inches in length, somewhat shaped like a Donax, fairly thick and compressed. Chondrophore fairly large and spoon-shaped. Left valve with a long anterior and posterior lateral tooth, both of which have fine, comb-like teeth on each side. Pallial sinus small and U-shaped. Interior tan to cream. Exterior with a thin, yellowish, smooth periostracum. Common from low water to 50 fathoms.
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I inch (English) I pouce (French) I
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THE NEW ILLUSTRATED NATURALIST EDIT
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NEW YORK D. Van Nostrand Company, I
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Preface This book wrote itself in r
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Contents CHAPTER PAGE Preface vii L
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1 xii List of Plates PLATE 2 3 BETW
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XIV A.AV Foreivord of all of us who
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CHAPTER I Man and Mollusks Seashell
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Man and Mollusks 5 Indo-Pacific are
Page 25 and 26:
Man and Molhisks 7 (Cypraecassis ru
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Man and Mollusks 9 It was not until
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Man and Molhisks 11 shell ornaments
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Man and Mollusks 13 ancients. They
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Ma7J and Mollusks 15 Sea Snails, ]a
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Life of the Snails 17 pods. A few s
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Life of the Snails 19 ma {Smtnia) l
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Life of the Snails 21 review of the
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Life of the Snails 23 from which th
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Life of the Snails 25 sexuality. Du
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IMASSARIUS Life of the Snails 27 Fi
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Life of the Snails 29 eggs may deve
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CHAPTER III Life of the Clams Of th
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Life of the Clams 3 3 book and, by
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Life of the Cla?ns HOW THEY FEED No
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Life of the Cla?ns 37 Lying close t
Page 57 and 58:
Life of the Cla?ns 39 A certain amo
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Life of the Clams 41 the eggs are f
Page 61 and 62:
Life of the Clams 43 HOW THEY SENSE
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Life of the Clams 45 the scallops.
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Lives of the Other Mollusks 47 crip
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Lives of the Other Mollusks 49 freq
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Lives of the Other Molliisks 51 now
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Lives of the Other Mollusks 53 spec
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Lives of the Other Mollusks 55 micr
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Collecting American Seashells SI It
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Collecting A7nerican Seashells 59 s
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CollecMg American Seashells 61 grav
Page 81 and 82:
Collecting American Seashells 63 va
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Collecting American Seashells 65 eq
Page 85 and 86:
Collectifig American Seashells 61 o
Page 87 and 88:
Collecting American Seash ells 69 A
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Honjo to Know American Seashells 71
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How to Know American Seashells 73 F
Page 93 and 94:
Honv to Know Ajjierican Seash ells
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Hoiv to Know American Seashells 77
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How to Knouo American Seashells 79
Page 99 and 100:
Honjo to K?iow American Seashells 8
Page 101 and 102:
HouD to Know Aiiiericmi Seashells 8
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Houo to Know Afjierican Seashells 8
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How to K?iow American Seashells 87
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PART II Guide to the American Seash
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92 America?! Seash ells Gulf of Mex
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94 American Seashells Haliotis kamt
Page 114 and 115:
96 American Seashells Puncturella c
Page 116 and 117:
98 Ainerican Seash ells Diodora mur
Page 118 and 119:
100 American Seashells Subfamily FI
Page 120 and 121:
102 American Seashells Subgenus Col
Page 122 and 123:
104 American Seashells I % inch in
Page 124 and 125:
106 American Seashells Acmaea antil
Page 126 and 127:
108 American Seash ells Margarites
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1 10 American Seashells Subgenus Ca
Page 130 and 131:
112 American Seash ells Subfamily C
Page 132 and 133:
114 American Seashells Figure 33. V
Page 134:
Plate 2 PACIFIC COAST ABALONES a. R
Page 138:
Plate 4 NERITES, PURPLE SEA-SNAILS,
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Plate 6 COWRIES a. Atlantic Yellow
Page 146 and 147:
Plate 8 Living Flamingo Tongues on
Page 148:
Plate 9 BONNETS, TUNS AND FROG-SHEL
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Plate 1 SPINDLES, DWARF OLIVES AND
Page 156:
Plate 13 ATLANTIC TULIPS, SPINDLES
Page 160 and 161:
Plate 15 NEW ENGLAND NUDIBRANCHS a.
Page 162 and 163:
Plate 16 PACIFIC COAST NIIDIBRANCHS
Page 165 and 166:
TROCHIDAE 115 % to I Inch in length
Page 167 and 168:
TROCHIDAE 117 Indies, Although fair
Page 169 and 170:
TROCHIDAE 119 T. hotessierana Orbig
Page 171 and 172:
TURBINIDAE 121 should be considered
Page 173 and 174:
TURBINIDAE 12 3 Arene variabilis Da
Page 175 and 176:
TURBINIDAE Ventura, California, to
Page 177 and 178:
PHASIANELLIDAE 1 2 7 Lower Florida
Page 179 and 180:
NERITIDAE 129 Nerita fulgurans Gmel
Page 181 and 182:
LITTORINIDAE 131 Shell smooth excep
Page 183 and 184:
LITTORINIDAE 13 3 Littorina angulif
Page 185 and 186:
RISSOIDAE US 34 to 1 inch in length
Page 187 and 188:
RISSOIDAE 137 C. Interspaces with s
Page 189 and 190:
VITRINELLIDAE 139 Vs inch in diamet
Page 191 and 192:
TURRITELLIDAE 141 but usually has s
Page 193 and 194:
VERMETIDAE 143 heavily beaded, spir
Page 195 and 196:
CAECIDAE 145 not the common West Fl
Page 197 and 198:
CAECIDAE 147 3.0 mm. in length by i
Page 199 and 200:
CAECIDAE 149 shell, cutting across
Page 201 and 202:
POTAMIDIDAE 151 the outside of the
Page 203 and 204:
CERITHIIDAE 15 3 2 yellowish white,
Page 205 and 206:
CERITHIIDAE 155 % to /4 inch in len
Page 207 and 208:
CERITHIIDAE 157 %6 to % inch in len
Page 209 and 210:
TRIPHORIDAE 159 cords or threads. A
Page 211 and 212:
EPITONIIDAE 161 be opisthobranchs a
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EPITONIIDAE 163 Vo X.0 % inch in le
Page 215 and 216:
HIPPONICIDAE 165 % to % inch in len
Page 217 and 218:
TRICHOTROPIDAE 167 is white in colo
Page 219 and 220:
CALYPTRAEIDAE 169 I % inches in dia
Page 221 and 222:
CALYPTRAEIDAE 171 Variable in shape
Page 223 and 224:
STROMBIDAE 17 3 "It is generally ad
Page 225 and 226:
LAMELLARIIDAE 175 Strombus ranimis
Page 227 and 228:
ERATOIDAE 177 ^ inch in length, res
Page 229 and 230:
ERATOIDAE 179 Trivia 7tix Schilder
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CYPRAEIDAE 181 Cypraea mus Linne (p
Page 233 and 234:
OVULIDAE 183 Neosimnia avena Sowerb
Page 235 and 236:
NATICIDAE 185 ^ inch in diameter, p
Page 237 and 238:
NATICIDAE 187 Subgenus Glossaulax P
Page 239 and 240:
NATICIDAE 189 Genus Lunatia Gray 18
Page 241 and 242:
NATICIDAE 191 Subjainily NATICINAE
Page 243 and 244:
CASSIDIDAE 193 1% to 3 inches in le
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CYMATIIDAE 195 enamel-white. Enamel
Page 247 and 248:
BURSIDAE 197 % to 2^2 inches in len
Page 249 and 250:
TONNIDAE 199 Subgenus Crossata Jous
Page 251 and 252:
MURICIDAE 201 3 inches in length, w
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MURIGIDAE 203 Outer lip crenulate a
Page 255 and 256:
MURICIDAE 205 completely. A deep wa
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MURIGIDAE 207 described, and we hav
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MURICIDAE 209 1% to 2 inches in len
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a. KEYHOLE LIMPET, Megathura crenu-
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a. ERODED PERIWINKLE, Littorina pla
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a. LAMELLOSE WENTLETRAP, Epitonium
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TWO-KEELED HAIRY-SHELL, Tiicliotrop
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a. SULCATE MITER, Mitra sulcata Gme
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a. COMMON EASTERN OYSTER, Crasso- s
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BROAD-RIBBED CARDITA, Cardita flori
Page 290 and 291:
a. GIANT ATLANTIC COCKLE, Dbwcardiu
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MURICIDAE 211 Muricopsis ostrearum
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MURICIDAE 213 Urosalpinx tampaensis
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MURICIDAE 215 with rounded, spiral
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MURICIDAE 217 often fimbriated axia
Page 301 and 302:
MAGILIDAE 219 Aperture white. Exter
Page 303 and 304:
COLUMBELLIDAE 221 Genus Anachis H.
Page 305 and 306:
COLUMBELLIDAE 22 3 gausapata Gould
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BUCCINIDAE 225 a much higher spire,
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BUCCINIDAE 111 3 to 4 inches in len
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BUCCINIDAE 229 Colus pubescens Verr
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BUCCINIDAE 231 Subgenus Sulcosipho
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BUCCINIDAE 23 3 Former distinct var
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MELONGENIDAE 235 Melongena corona p
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NASSARIIDAE 237 part of the Gulf of
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NASSARIIDAE 2 39 Subgenus Hinia Gra
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FASCIOLARIIDAE 241 iVi inches in le
Page 325 and 326:
FASCIOLARIIDAE 243 Subfa?nily FUSIN
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OLIVIDAE 245 7 to 14 inches in leng
Page 329 and 330:
OLIVIDAE 247 % inch in length, apex
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MITRIDAE 249 in color. lo whorls. C
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VOLUTIDAE 251 Subgenus Aurinia H. a
Page 335 and 336:
CANCELLARIIDAE 2 5 3 Genus Narona H
Page 337 and 338:
Figure 56. Marginellas. a, Marginel
Page 339 and 340:
MARGINELLIDAE 257 Prunu77t apicimw7
Page 341 and 342:
MARGINELLIDAE 2 59 % inch in length
Page 343 and 344:
CONIDAE 261 brown dots sometimes pr
Page 345 and 346:
CONIDAE 263 % to % inch in length;
Page 347 and 348:
TEREBRIDAE 265 Conus californiciis
Page 349 and 350:
TURRIDAE 267 Terebra salleana Desha
Page 351 and 352:
Figure 57. American Turret and Mang
Page 353 and 354:
TURRIDAE 271 brown with a white ban
Page 355 and 356:
TURRIDAE 27 3 Siibjainily BORSONIIN
Page 357 and 358:
ACTEONIDAE 275 5 mm. in length; bod
Page 359 and 360:
BULLIDAE 277 Fa7mly DIAPHANIDAE Gen
Page 361 and 362:
ATYDAE 279 Genus Haminoea Turton an
Page 363 and 364:
ACTEOCINIDAE 281 3 to 4 mm. in leng
Page 365 and 366:
GASTROPTERIDAE 2 8 3 mantle reflexe
Page 367 and 368:
APLYSIDAE 285 G. pacificu77i Bergh
Page 369 and 370:
PLEUROBRANCHIDAE 287 ish. Gill plum
Page 371 and 372:
PYRAMIDELLIDAE 289 to the host by m
Page 373 and 374:
PYRAMIDELLIDAE 291 Figure 63. Pacif
Page 375 and 376:
PERACLIDAE 293 Spiratella lesueuri
Page 377 and 378:
CAVOLINIDAE 295 8 mm. in length, co
Page 379 and 380:
PTEROPODA 297 FiGURK 64. F.xplanati
Page 381 and 382:
DORIDAE 299 stricted. There is only
Page 383 and 384:
DORIDAE 301 rate, retractile branch
Page 385 and 386:
DENDRODORIDIDAE 303 minute, compres
Page 387 and 388:
ONCHIDORIDAE 305 2 to 3 inches in l
Page 389 and 390:
DENDRONOTIDAE 307 Ancula pacifica M
Page 391 and 392:
FLABELLINIDAE 309 to 4. Radula of 8
Page 393 and 394:
SIPHONARIIDAE 311 Figure 65. Atlant
Page 395 and 396:
With tiny, granular scales: LEPIDOC
Page 397 and 398:
MOPALIIDAE 315 Family MOPALIIDAE Ge
Page 399 and 400:
CRYPTOPLACIDAE 317 center of each v
Page 401 and 402:
ISCHNOCHITONIDAE 319 fly-shaped val
Page 403 and 404:
ISCHNOCHITONIDAE 3 2 % to /4 inch i
Page 405 and 406:
ISCHNOCHITONIDAE 3 2 3 I to 1V2 inc
Page 407 and 408:
CHITONIDAE 325 Chiton squa?7tosiis
Page 409 and 410:
CHAPTER IX Dentaliums and Other Tus
Page 411 and 412:
Dentalium texasianum Philippi North
Page 413 and 414:
DENTALIIDAE 331 Subgenus Graptacme
Page 415 and 416:
SOLEMYACIDAE 33 3 Order PALAEOCONCH
Page 417 and 418:
NUCULIDAE 3 35 Nucula atacellana Sc
Page 419 and 420:
NUCULANIDAE 337 valves). Concentric
Page 421 and 422:
NUCULANIDAE 3 39 About H to % inch
Page 423 and 424:
ARCIDAE 341 1% to 2 inches in lengt
Page 425 and 426:
ARCIDAE 343 ment moderately develop
Page 427 and 428:
ARCIDAE 345 2/4 to 5 inches in leng
Page 429 and 430:
LIMOPSIDAE 347 angular. Mostly deep
Page 431 and 432:
MYTILIDAE 349 Glycymeris americana
Page 433 and 434:
MYTILIDAE 351 Crenella columbiana D
Page 435 and 436:
MYTILIDAE 35 3 purplish and white.
Page 437 and 438:
MYTILIDAE 355 siphon and behind int
Page 439 and 440:
MYTILIDAE 357 with strong, vertical
Page 441 and 442:
FINNIDAE 359 Family PTERIIDAE Genus
Page 443 and 444:
PECTINIDAE 361 row, elongate chondr
Page 445 and 446:
PECTINIDAE 363 Pecten tereinus Dall
Page 447 and 448:
PECTINIDAE 365 secondary rib in bet
Page 449 and 450:
PECTINIDAE 367 margin of the valve.
Page 451 and 452:
SPONDYLIDAE 369 are attached to roc
Page 453 and 454:
ANOMIIDAE 371 I to 3 inches in heig
Page 455 and 456:
OSTREIDAE 37 3 similar to the Pacif
Page 457 and 458:
ASTARTIDAE 375 Crassostrea virginic
Page 459 and 460:
CRASSA TELLIDAE 3 7 7 adjacent and
Page 461 and 462:
CARDITIDAE 379 each other, located
Page 463 and 464:
ARCTICIDAE 381 shells are smooth an
Page 465 and 466:
DIPLODONTIDAE 383 Superjamily LUCIN
Page 467 and 468:
LUCINIDAE 385 monly with a thin, ye
Page 469 and 470:
LUCINIDAE 387 thick-shelled, white,
Page 471 and 472:
LUCINIDAE 389 The subspecies centri
Page 473 and 474:
CHAMIDAE 391 I to I K Inches In len
Page 475 and 476:
CHAMIDAE 393 of the valves. The paU
Page 477 and 478:
LEPTONIDAE 395 Lasaea cistula Keen
Page 479 and 480:
CARDIIDAE 397 a single specimen, is
Page 481 and 482:
CARDIIDAE 399 I to 2 inches in size
Page 483 and 484:
CARDIIDAE 401 Exterior orange-yello
Page 486 and 487:
Plate 34 SMALL SCALLOPS a. Sentis S
Page 488:
Plate 35 PEARL OYSTERS AND MUSSELS
Page 492:
Plate 37 JEWEL BOXES a. Clear Jewel
Page 496:
Plate 39 VENUS CLAMS AND COCKLES a.
Page 501 and 502: CARD]IDAE 403 round and slightly ga
Page 503 and 504: VENERIDAE 405 1% inches in length,
Page 505 and 506: VENERIDAE 407 Genus Chione Miihlfel
Page 507 and 508: VENERIDAE 409 % to % inch in length
Page 509 and 510: VENERIDAE 411 1% to 2 inches in len
Page 511 and 512: VENERIDAE 413 ^ to % inch in length
Page 513 and 514: VENERIDAE 415 more distinct concent
Page 515 and 516: VENERIDAE 417 storms between Seal B
Page 517 and 518: PETRICOLIDAE 419 Color whitish to t
Page 519 and 520: TELLINIDAE 421 pointed and slightly
Page 521 and 522: TELLINIDAE 423 Schrank 1803 nor Lea
Page 523 and 524: Tellina modesta Carpenter TELLINIDA
Page 525 and 526: TELLINIDAE 427 Tellina iris Say Iri
Page 527 and 528: TELLINIDAE 429 the pallial sinus ru
Page 529 and 530: TELLINIDAE 4^1 centric sculpture of
Page 531 and 532: TELLINIDAE 43 3 Macoma yoldijormis
Page 533 and 534: SEMELIDAE 435 Semele pwpiirascens G
Page 535 and 536: DONACIDAE 437 A bra aequalis Say Co
Page 537 and 538: SANGUINOLARIIDAE 439 a purple flush
Page 539 and 540: SANGUINOLARllDAE 441 obscure) runni
Page 541 and 542: SOLENIDAE 443 5 to 6 inches in leng
Page 543 and 544: MACTRIDAE 445 coarse, concentric, i
Page 545 and 546: MACTRIDAE 447 end smaller than the
Page 547: MACTRIDAE 449 Genus Miilinia Gray 1
Page 551 and 552: HIATELLIDAE 45 3 the dorsal and ven
Page 553 and 554: MYACIDAE 455 My a arenaria Linne So
Page 555 and 556: CORBULIDAE 457 % of an inch in leng
Page 557 and 558: GASTROCHAENIDAE 459 dull white with
Page 559 and 560: PHOLADIDAE 461 the valves. No scien
Page 561 and 562: PHOLADIDAE 463 which is supported b
Page 563 and 564: TEREDINIDAE 465 % to I ^ inches in
Page 565 and 566: TEREDINIDAE 467 Pallets about Vs in
Page 567 and 568: PANDORIDAE 469 ally compressed. Out
Page 569 and 570: THRACIIDAE 471 I inch in length, th
Page 571 and 572: PERIPLOA4A TIDAE 47 3 in a ventral
Page 573 and 574: CUSPIDARIIDAE 475 entire surface of
Page 575 and 576: CUSPIDARIIDAE 477 Cardio7nya pectin
Page 577 and 578: SEPIOLIDAE 479 The rather fragile,
Page 579 and 580: LOLIGINIDAE 481 Figure 99. Atlantic
Page 581 and 582: OMMASTREPHIDAE 48 3 Genus Doryteuth
Page 583 and 584: OCTOPODIDAE 485 Family ARGONAUTIDAE
Page 585 and 586: OCTOPODIDAE 487 under large rocks a
Page 587 and 588: W OCTOPODIDAE 489 Aside from egg-si
Page 589 and 590: Guide to the Molluscmi Literature 4
Page 591 and 592: Guide to the Molliiscan Literature
Page 593 and 594: Guide to the Molluscan Literature 4
Page 599 and 600:
Guide to the Molhiscan Literature 5
Page 601 and 602:
Guide to the Molhiscan Literature 5
Page 603 and 604:
Index to Subject Matter and Common
Page 605 and 606:
Carinate Dove-shell, 222 Carinate L
Page 607 and 608:
I Flat Moon Shell, see Common Baby'
Page 609 and 610:
I- 1 Lunar Dove-shell, 223, pi. 25g
Page 611 and 612:
Rattle Shell, see Blackberry Drupe,
Page 613:
Do^^ Fryon's Scallop, 366, pi. 33a
Page 616 and 617:
518 Agriodesma, 469 Agriopoma, 416
Page 618 and 619:
520 bitruncata, Panope, 454 Bittium
Page 620 and 621:
522 cepio, Pododesmus, 572 Cerastod
Page 622 and 623:
524 Index cucuUata, Puncturella, 96
Page 624 and 625:
526 Fartulum, 149 fasciata, Tegula,
Page 626 and 627:
528 rugosa, 453 striata, 453, fig.
Page 628 and 629:
530 fenestrata, 122, pi. i8u lirata
Page 630 and 631:
532 petri, 205 pomum, 202, pi. lo-l
Page 632 and 633:
534 Paleoconcha, 332, 333 pallasi,
Page 634 and 635:
536 Pteriidae, 359 Pteropoda, 292 P
Page 636 and 637:
538 weyssei, 130 miithi, Boreotroph
Page 638 and 639:
540 haemastoma haysae, 213 imbricat
Page 641:
I I
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