PiSIDiUM occidentale, JV^iur., "Califoraia 



compvessnm, Prime, Nevada 



SPH.^iRiuxr. 



dentatumj Ilald., Oregon 



Spokanii, Baird, Idaho ... 

 Alexia setifcr, CooJ'er, California... 

 Carinifex Newberryi, Lea, California... 

 Fliimnicola Nuttalli, Lea, Oregon 

 GoNiOBASis Bairdiana, Lda, Oregon... 



Draytoni, Lea, California 



plicifera, Lea, Oregon 



rudens. Lea, Oregon ... 



nigrina, Lea, California ... 

 LiMNOPHY.SA 



Rowelli, Tryon, California ... 



Nuttalliana, Lea, California 



Traskii, Tryon, California 



bulimoides, Lea, California 



desidiosa. Say, Oregon 



Binneyi, Tryon, Idaho ... .< 

 Physa, 



diaphana, Tryon, California ... 



Gabbii, Tryon, Oregon 



Carltoni, Lea, California 



hypnorum, Z. Utah 



Traskii, Tryon, Oregon 



Hawnii, Lea, Nevada 



costata, NeiL'c, California 



Cooperi, Tryon, California 



distinguendo, Tryon, California 



virgata. Could, Lower California... 



propinqua, Tryon, California... 

 Valvata virens, Tiyon, California ... 

 Planorbis parvus, Say, Oregon ... ... 



,, opercularis, Gotdd, California 



,, corpulentis. Say, Oregon 



,, amnion, Gould, California ... 

 Pomatiopsis intermedia, Tryon, Nevada.., 

 Pompholyx solida, Dall, Nevada 

 Tryonia protea, Gotild, Arizona ... 

 Bythinella nuclea. Lea, California ... * 



The following are from the Eastern States : — 



Helix, 



thyroides, Say. 

 bucculenta, Gld, 

 albolabris. Say. 

 profunda. Say. 

 Roemeri, L^fr. ... 

 multdineata, .Say, ... 

 Pennsylvanica, Green.... 

 clausa. Say. 



Mitchelliana, Lea 



hirsuta, Say. 

 inonodon, Rackett. 

 inflecta. Say. 

 fallax. Say. ... • ... 



trident^.ta, Say. 

 palliata. Say. 

 .appre.ssa, Say. 



All communications to be addressed to Taylor 

 St. Ann's Street, Leeds, 



o 3 

 o 3 



Bros. 



