OF THE UPPER MISSOURI. 181 
23. PLANORBIS CAMPANULATUS, Say, Mouth of Big Sioux river. 
24, PHYSA HETEROSTROPHA, 
25. Puysa INTEGRA? Hald., 
26. PuysA ELONGATA, Say, 
27. PHYSA AMPULARIA, Say, 
28. Psiprum—? | Grindstone creek, 
29. CycLas—? 
30. CyrcLas—? 
31. AMNICOLA PORATA, Say, Fort Berthold. 
32. AMNICOLA LAPIDARIA, Say, “ 
LAND SHELLS. 
33. HELIX MINUSCULA, Binney, Council bluffs, Nebraska Territory. 
34, HELIX LINEATA, Say, 
35. HELIX sTRIATELLA, Anthony, 
36. HELIx INFLECTA, Say, 
37. HELIX HIRSUTA, Say, 
38. HELIX SOLITARIA, Say, 
39. HELIX ALTERNATA, Say, 
40. HeELrx ELEVATA, Say, 
41, Heurx FALLAX, Say, 
42, HELIX cCONCAVA, Say, 
43. Hetix LIGERA, Say, 
44, HEeLix PROFUNDA, Say, Near Fort Leavenworth, Kansas Territory. 
45, HELIX MULTILINEATA, Say, 
46. Hetrx monopon, Rackett, 
47. Hewrx PutcHELLA, Mull., 
48, Hewix costata, Mull., 
49, HELIX ARBOREA, Say, Drift on the Missouri near Fort Berthold. 
66 “s oe 
50. Hetrx CHERESINA, Say, 
51. Hetrx ELEcTRINA, Gould, ss ‘“ re 
52, Hetrx Coorent, Binney, Black hills, Nebraska Territory. 
53. Pura NEBRASKANA, W. G. Binney, Fort Berthold, Nebraska Ter. 
54, Pura Buanpi, W. G. Binney, “ ‘“ 
55. PupA ARMIGERA, Say, 
56. Pura PENTODON, Say, 
57. Pura MopEstA, Say, 
58. Pura BApIA, Adams, 
66 74 
Council bluffs, 6s 
a4 as 
ia 66 
