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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 29 FIGURE 12.—Western
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NUMBER 554 31 FIGURE 13.—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
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NUMBER 554 45 FIGURE 18.—Western
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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 67 and 68: NUMBER 554 61 FIGURE 24.—Western
- Page 69 and 70: NUMBER 554 63 units; Dg3 small (som
- Page 71 and 72: NUMBER 554 65 Pyrgulopsis simplex H
- Page 73 and 74: NUMBER 554 67 FIGURE 26.—Western
- 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
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- 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 99 and 100: NUMBER 554 93 FIGURE 36.—Central
- Page 101 and 102: NUMBER 554 FIGURE 38.—Central rad
- Page 103 and 104: NUMBER 554 97 FIGURE 40.—Central
- Page 105: NUMBER 554 99 FIGURE 42.—Central
- Page 109 and 110: NUMBER 554 FIGURE 46.—Penes of we
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- Page 113 and 114: NUMBER 554 FIGURE 50.—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