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$Wetenschap - \Nijverheid- Handel$

m 138 3. Ilyarachna denticulata, G. 0. Sars, n. sp. (PL LXI, fig. 1.) Specific Characters. Very like the preceding species, both in size and general appearance, but differing conspicuously in the armature of the body. Ce- phalon of a similar shape to that in /. hirticeps, dorsal face densely clothed with short spines. First segment of mesosome considerably smaller than the 3 succeeding ones, and with the lateral parts imperfectly developed; anterior edge of all 4 segments divided into a regular series of from 10 to 15 very conspicuous dentiform projections. The 3 posterior segments of mesosome smooth, and of a similar appearance to that in I. hirticeps. Caudal segment likewise scarcely differing in shape from that in the said species. Superior antennae rather short, with the lusal joint strongly denticulate inside, and the 2nd joint tipped with several diverg- ing spines, flagellum 8-articulate. Inferior antenna? about twice as long as the body, and rather slender, penultimate joint of the peduncle without any spines inside. Legs and uropoda nearly exactly as in /. hirticeps. Colour whitish. Length of adult female 7 mm. Remarks. This form is so very like I. hirticeps both in size and general appearance, as to be easily confounded with it. On a closer examination, how- ever, it is distinguished pretty well by the peculiar armature of the fore- body. The soft bristles clothing the dorsal face of the cephalon in the abovenamed species, are here replaced by rigid spines, and the anterior edges of the 4 first segments of the mesosome are not, as in that species, finely crenulated, but divided into coarse spiniform projections. On the other hand, there is no trace of the strong spines occurring in 1. hirticeps on the penultimate peduncular joint of the inferior antennoo. In most other respects there is a very close resem- bhmce between this species and I. hirticeps. Occurrence. L have found this species in several places on the west coast of Norway, from Stavanger up to the Trondhjem Fjord, in depths ranging from 100 to 400 fathoms. Off the Lofoten Islands and the Finmark coast, this species ilocs not seem to occur, and it thus appears to be a more southern form. I had previously confounded this species with 1. hirticeps.
139 Gen. 3. EehmOZOne, G. 0. Sars, n. Syn: Ih/amclnia, G. 0. Sars (pnvt). Generic Characters. Body somewhat resembling in shape that in the genus Ilyarachna, but comparatively shorter and thicker, with the anterior segments of mesosome strongly spinous, the 3 posterior segments short and broad. Caudal segment distinctly notched on each side, at some distance from the tip. Antennae about as in Ilyarachna. Mandibles very large and without a trace of palps. Ambulatory legs resembling those in the genus Ilyarachna; natatory legs, on the other hand, far less fully developed, with the outer joints but slightly expanded. Uropoda with 2 distinct rami issuing from the outer side of the large, lamellar basal part. Remarks, This new genus is founded upon the form previously described by the present author as Ilyarachna coronata. On a closer anatomical examination of this form, I have found it to differ in some particulars rather markedly from the 3 above-described species, so that it ought more properly to be regarded as the type of a nearly-allied genus. Among these differences may be named the absolute absence of mandibular palps, and the biramous character of the uropoda. The genus comprises as yet but a single species. Echinozone coronata, (PI. LXI, fig. 2.) G. 0. Sars. l Ilyarachna coronata, G. O. Sars, Nye Dybvamlscrus aceer fra Lofuten. Clir. Vid. Selsk. Forlidl. 1869, p. 168. Specific Characters. Body very short and compact, scarcely twice as long as it is broad. Cephalon with the dorsal face strongly perfectly smooth, lateral parts obliquely expanded. Anterior edge more than vaulted and of the first 4 segments of mesosome considerably raised, and divided into 6 8 coarse spiniform projections, between which are as many very small denticles, lateral parts segment simple, those of the 3 succeeding segments each produced of 1st into 2 acute lappets. The 3 posterior segments of mesosome comparatively short, and, com- bined, not nearly attaining the length of the anterior division, dorsal face somewhat uneven, anterior edge of 1st segment slightly denticulated. Caudal segment scarcely longer than it is broad at the base, lateral edges minutely setous, and exhibiting, at some distance from the tip, a very distinct notch denned in front by a dentiform projection, tip acutely produced. Superior antenna? not reaching to the middle of the antepenultimate peduncular joint of the inferior ones, basal joint of moderate size and without any denticles, nagellum 10-articulate. Inferior
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AN ACCOUNT OF THE CRUSTACEA OF NORW
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BERGEN. JOHN GRIEG
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VI Copenhagen Museum, who have kind
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VIII H. J. Hansen. Oversigt af de p
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X C. Bovattius. Notes on the family
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thus meriting the name of true gnat
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Tribe 1. CHELIFERA. Body generally
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of legs. In the structure of the or
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8 fied with Apseudes talpa of Monta
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10 in female rather strong, hand ve
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12 flagellum. Inferior antennae a l
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14 Tanais, on separate lobes. Super
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16 Gen. 2. Paratanais, Dana, 1852.
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18 the genus Parataitais. Inferior
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20 robust than in T. tenuimanus, wi
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22 Remark*. - This form was first r
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24 free segment of mesosonie longer
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26 Occurrence. Only 2 female specim
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28 Distribution. -- Off Reykjavik,
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30 projection not denned from the b
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32 Imt slightly setous. Chelipeds s
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34 Cryptocope abbreviata, (PL XV, f
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Occurrence. I have met with this fo
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38 wholly absent, in male normally
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Apseudidee. G.O. S ars, autogr . I
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Ta na i d ae. 6.0. S ars, autogr. "
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Jar. aid se. G.O. S ars, autogr. I
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Ta n a i d ae. G. 0. S ars, autogr
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Ta naid as. G.O. S ars, autogr. I s
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Is Ta n a i d as . G.O. S ars, auto
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Ta n a i d as. G.O. S srs, autogr.
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40 1. Pseudotanais forcipatus (Lill
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42 form; carpal spine of the succee
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44 without distinct coxal plates. M
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46 first 2 segments of mesosome som
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long sensory 48 filaments. Mandible
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50 Fam. 2. Gnathiidae. r*. Body of
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52 Praniza might be the female of A
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54 2. Gnathia dentata, (PI. XXII. f
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56 Distribution. Greenland (Kroyer)
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58 Gen. 1. ^Ega, Leach, 1815. Gener
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60 2. &g& tridens, Leach. (Pi. XXV,
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62 the end of the propodos, inside
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64 7. ^Ega ventrosa, (PL XXVI, fig.
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66 spinules. Eyes very large, nearl
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68 Remarks. The above diagnosis ref
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70 hroad, coarsely spinous at the t
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72 Anterior pairs of legs nearly as
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74 mentary stars, arranged in trans
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76 Limnoria lignorum (Eathke). (PI.
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Tribe 3. VALVIFERA. Remarks. The ch
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80 E. Miers 1 ), the genus comprise
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Ta na i d SB. G.O. S ars, autogr. I
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Anthuridae. G.O. S ars, autogr . I
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Gnathiidae. G. 0. S BTS, autogr . I
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tgidae. G.O.Sars. autogr. I s opo d
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fegidae. G. 0. S ars, autogr . Is o
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G.O. S ars, autogr . I s opo da. PI
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Cirolanid I s opo da. PI. .,-.,..-
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Idotheidas. G.O. S ars, autogr . I
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82 flagellum much shorter than the
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84 he records as I. phosphor ca Har
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86 Occurrence. The species has a di
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88 Arc-torn* given by Latreille to
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90 2. Astaeilla arietina, G. 0. Sar
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92 Occurrence. It would seem to be
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Tribe k. ASELLOTA. Be-mark*. In the
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96 suture along the middle, and 2 l
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98 Fam. 2. laniridae. Characters. G
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U)0 peduncle. Kpignath of the maxil
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102 of 400 fathoms. Subsequently I
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104 length, without any distinctly
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106 Remarks. The type of this famil
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108 2. Munna limieola, G. 0. Sars.
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110 Inferior antenna?, as compared
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112 Paramunna bilobata, (PI. XLVII,
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114 hairs in their outer part, tip
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116 Gen. 4. DendrOtlOn, G. O. Sara,
Page 191: IdoiheidaB. G.O. S ars, autogr . I
Page 195: Arciuridaa. G.O. S srs, autogr I s
Page 199: Arcturidae. G.O. S ars, autogr I s
Page 203: Janiridse. G.O. S srs, autogr . I s
Page 207: laniridas. I s op o da.. PI. 42 G.
Page 211: Munnids. Is op o da.. PI. 44. G.O.S
Page 215: Munnidas- G.O. S ars, autogr I s op
Page 219: Munnidae. I s opo da- i. G. 0. S ar
Page 222 and 223: 118 Fam. 4. Desmosomidae. Character
Page 224 and 225: 120 ever, rather different, and ver
Page 226 and 227: 122 middle, to a strong, recurved,
Page 228 and 229: 124 short. Uropocla scarcely exceed
Page 230 and 231: 126 form, with the proximal joints
Page 232 and 233: 128 to he identical with a form pre
Page 234 and 235: 130 the mandibles, in particular, i
Page 236 and 237: 132 As our knowledge of this peculi
Page 238 and 239: 134 with the carpal joint oblong fu
Page 240 and 241: 136 1. Ilyarachna longicornis, (PI.
Page 244 and 245: 140 antennae not quite twice as lon
Page 246 and 247: 142 Occurrence. I first discovered
Page 248: 144 Gen. 6. EliryCOpe, G. 0. Sars,
Page 251: Desmosomidae, I s op o da.. PI. 50.
Page 257: Desmosomidae 1 . G. 0. S ars, autog
Page 263: Munnopsidae. G.O. S ars, autogr , I
Page 267: Munnopsidas. 6. 0. S ars, autogr .
Page 271: IVlunnopsidae. G.O. S ars, autogr .
Page 275: Munnopsidae. G 0. S srs, autogr . I
Page 278 and 279: 146 taken it very plentifully on a
Page 280 and 281: 148 must also occur off the coasts
Page 282 and 283: 150 the carpal one. dactylus minute
Page 284 and 285: 152 orbicular in form, dactylus com
Page 286 and 287: 154 The mandibles are strong, and a
Page 288 and 289: or less elongated, basal part not p
Page 290 and 291: 158 Remarks. This genus, establishe
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160 thin, without air-chambers or a
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162 Occurrence. According to Mr. Bu
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of n little bowl of a spoon; that o
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166 clear golden yellow colour, wit
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168 the last peduncular joint, and
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170 broad and laminar, though scarc
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172 ramus narrow lanceolate, and ex
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174 Remarks. This form was first de
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176 Gen. 4. PorcelllO, Latr., 1804.
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178 wards, frontal lobe less promin
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180 4. Poreellio Rathkei, Brandt. (
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182 plates of only the 2 anterior p
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184 increasing in length posteriorl
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Munnopsidae. I s op i. G.O. S ars,
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Munnopsidae. G.O. S ars, autogr . I
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G.O. S ars, autogr . s op o Lig'ia
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Trichoniscidae. I s op o da. PI. 72
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Trichoniscidae. 1 S O ]3 O CLQ._ PI
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Oniscidas. I s opo da. PI. 76. G.O.
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Oniscidae. I s op o da. PI. 78. : r
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Oniscidae. I s op o da. P! . 80. G.
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Armadillidiidas. I s op i. V., V^,.
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JBopyridae. I s opo da- t G.O S ars
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Bopyridae. G.O S ars, autogr. I s o
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Bopyridae. G. 0. S ars, autogr I s
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186 Remarks. The present genus, est
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188 above-described genus Cylisticu
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190 as it is very common both in Sw
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192 Side-plates of 1st segment of r
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apparent. In the latter case, the 3
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196 simple, conic; posterior antenn
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198 Occurrence. This form is found
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200 fully grown, the parasite cause
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nier to their genus 7 \/ la '//////
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204 tal lamella, the distal edge of
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206 able want of correctness, as re
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208 branchiata. In the female, more
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210 Remarks. The present genus is v
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212 soft metasome of this Crustacea
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214 Miiller ought to be referred to
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216 and to a 'great extent encompas
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218 The genus MiCrOmSCUS, Fritz Mii
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220 tary appearance, in the present
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222 as a rule, very small and somet
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224 as Boj>-t/r/is mys'ulum and by
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226 On a closer examination, will t
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228 area in front. Caudal part of b
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230 2 middle figures on PI. 96) are
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232 shorter than the inner. Male no
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Bopyridae. I s op i. G. 0. S ars, a
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Bo py rid as. I s op o PI. G.O. S .
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Dajidae. G. 0. S ars, autogr . I s
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Dajid as. Is op o PI. 96. G. 0. S a
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234 anal segment obtusely produced
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236 Gen. 2. CryptOthlr, Dana, 1852.
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238 Aseoniscus simplex, G. 0. Sars,
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240 anal segment rounded at the tip
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242 apparatus present, Male (or las
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244 at present to state, as they ar
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246 Cryptoniseid (PI. C, fig. 3). N
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248 much more advanced stage, the o
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250 Page 122. Add the following spe
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252 Page 129. Add the 3 following s
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254 the end of the caudal segment.
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Acanthocope Acherusia Page. 131 65
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Page. crassicornis 175 Isevis 161 M
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Page. tenuicornis 23 tenuimanus 18
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PL 16. G. o. Bars. 1. Strong-ylura
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PL 84. 1. Bopyrus sqvillarum (Latr.
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2b. p 7 . Same, leg of 7th pair, ex
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cf p 3 - Same, leg of 3rd pair, cfp
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Cryptoniscidce. G.O.Sars, autogr. 1
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Cryptoniscidae. 1 S C>p O Pi. 100 G
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Desmosomidae. I S Op O da. Suppl. G
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Desmosomidae. 1 S O p O CLQ- Suppl.
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An Account of The Crustacea of Norw
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