A Review of the North American Freshwater Snail Genus Pyrgulopsis

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96 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY FIGURE 39.—Central radular teeth of western Pyrgulopsis: a, P. pilsbryana, USNM 858279 (bar = 13.6 nm); b, P. pisteri, USNM 850364 (bar = 20.0 jun); c, P. robusta, USNM 874185 (scale as in b); d, P. roswellensis, USNM 873132 (bar = 12.0 \un); e, P. simplex, USNM 847236 (scale as in d);f, P. sola, USNM 850290 (bar = 7.5 Jim).
NUMBER 554 97 FIGURE 40.—Central radular teeth of western Pyrgulopsis: a. P. steamsiana, USNM 873366 (bar = 12.0 Jim); b, P. thermalis, USNM 873250 (scale as in a); c, P. thompsoni, USNM 847238 (scale as in a); d, P. trivialis, USNM 847234 (scale as in a); e, P. wongi, USNM 857941 (bar = 10.0 Jim).
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A Review of the North American Fres
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S M I T H S O N I A N C O N T R I B
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Contents Page Introduction 1 Materi
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A Review of the North American Fres
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NUMBER 554 position of coiled ovidu
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NUMBER 554 field work and laborator
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NUMBER 554 FIGURE 2.—Morphology o
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NUMBER 554 Sr Ag Dsr FIGURE 4.—Di
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NUMBER 554 11 studied the anatomy o
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NUMBER 554 13 contrasted the genus
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NUMBER 554 15 FIGURE 7.—Western P
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NUMBER 554 17 Pyrgulopsis amargosae
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NUMBER 554 19 (in T 3S, R 22E, 25,0
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NUMBER 554 21 Pratt (1977) recorded
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NUMBER 554 23 DISTRIBUTION.—This
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NUMBER 554 25 nucleus slightly ecce
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NUMBER 554 27 FIGURE 11.—Western
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NUMBER 554 33 ornament an elongate,
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NUMBER 554 35 dium centered slightl
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NUMBER 554 FIGURE 15.—Western Pyr
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NUMBER 554 Pyrgulopsis glandulosa H
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NUMBER 554 41 visceral coil black.
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NUMBER 554 FIGURE 17.—Western Pyr
Page 51 and 52: NUMBER 554 45 FIGURE 18.—Western
Page 53 and 54: NUMBER 554 copulatrix. Seminal rece
Page 55 and 56: NUMBER 554 Pyrgulopsis merriami (Pi
Page 57 and 58: NUMBER 554 FIGURE 20.—Western Pyr
Page 59 and 60: NUMBER 554 or lightly pigmented on
Page 61 and 62: NUMBER 554 weakly frilled. Attachme
Page 63 and 64: NUMBER 554 lake have not yielded li
Page 65 and 66: NUMBER 554 59 REMARKS.—The small
Page 69 and 70: NUMBER 554 63 units; Dg3 small (som
Page 71 and 72: NUMBER 554 65 Pyrgulopsis simplex H
Page 75 and 76: NUMBER 554 69 DIAGNOSIS.—Shell ov
Page 77 and 78: NUMBER 554 71 filament, extending s
Page 79 and 80: NUMBER 554 FIGURE 28.—Eastern Pyr
Page 81 and 82: NUMBER 554 75 medium length, obliqu
Page 83 and 84: NUMBER 554 77 2e). Visceral coil li
Page 85 and 86: NUMBER 554 FIGURE 30.—Eastern Pyr
Page 87 and 88: NUMBER 554 ANSP 61606; paralectotyp
Page 89 and 90: NUMBER 554 83 and southeastern Ariz
Page 91 and 92: Appendix 2 Fossil Species Described
Page 93 and 94: NUMBER 554 87 Pyrgulopsis bryantwal
Page 95 and 96: NUMBER 554 89 FIGURE 32.—Central
Page 97 and 98: NUMBER 554 FIGURE 34.—Central rad
Page 101: NUMBER 554 FIGURE 38.—Central rad
Page 107 and 108: NUMBER 554 FIGURE 44.—Penes of we
Page 115 and 116: NUMBER 554 FIGURE 52.—Penes of ea
Page 117 and 118: Abbott, R.T. 1948. A Potential Snai
Page 119 and 120: NUMBER 554 Society of Washington, 1
Page 121: NUMBER 554 115 gyrus, Gabbia, Hydro
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A Review of the North American Freshwater Snail Genus Pyrgulopsis

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