OF THE UPPER MISSOURI. 181 
23. PLANORBIS CAMPANULATUS, Say, Mouth of Big Sioux river. 
24, PHysA HETEROSTROPHA, “ «“ 
25. PHysa INTEGRA? Hald., “ “ ‘“ 
26. PHYSA ELONGATA, Say, ‘6 ‘ ‘ 
PHYSA AMPULARIA, Say, “ « “e 
. Psiprum—? Grindstone creek. 
CycLas—? ce 6 
30. CycLas—? “e “ 
31, AMNICOLA PORATA, Say, Koreiberthold 
32. AMNICOLA LAPIDARIA, Say, ‘ 
LAND SHELLS. 
33. HELIX MINUSCULA, Binney, Council bluffs, Nebraska Territory. 
34, HELIX LINEATA, Say, “ “é «“ 
30. HELIX STRIATELLA, Anthony, ‘“ “6 ‘ 
36. HELIX INFLECTA, Say, “ « ‘“ 
37. HELIX HIRSUTA, Say, « «“ “é 
38. HELIX SOLITARTIA, Say, ‘“ “ ‘“ 
39. HELIX ALTERNATA, Say, ‘“ « «“ 
40. HELIX ELEVATA, Say, “ ‘ & 
41, HELIX FALLAX, Say, ‘< ‘“ “ 
42. HELIX concAva, Say, ‘“ “6 ‘“ 
43. HELIX LIGERA, Say, . ‘6 “ ‘ 
44, HELIX PROFUNDA, Say, Near Fort Leavenworth, Kansas Territory. 
45, HELIX MULTILINEATA, Say, “ ‘“ “ 
46. Hexix monopon, Rackett, te ‘“ « 
47. Hevrx PuLcHELLA, Mull., se ‘ és 
48. Hexrx costata, Mull., “ ‘“ «6 
49. HELIX ARBOREA, Say, Drift on the Missouri near Fort Berthold. 
50. HELrx CHERESINA, Say, “ “ «“ 
51. HELIX ELECTRINA, Gould, “ ‘ « 
02. Hextrx Cooperi, Binney, Black hills, Nebraska Territory. 
03. PupA NEBRASKANA, W. G. Binney, Fort Berthold, Nebraska Ter. 
54, Pura Buanpi, W. G. Binney, “ “6 
0d. PUPA ARMIGERA, Say, ‘ “ 
56. PuPpA PENTODON, Say, Council bluffs, «“ 
57. PupA MODESTA, Say, ‘“ ‘ 
08. Pupa BApIA, Adams, “ & 
ww Ww 
So Hm = 
