LIMNAEACEA. 247 



52. Planorbis (Bathyomphalus) redfieldi.C.B. Ad. 



1 Jamaica ; coll. W. A. Brown, Esq. 



53. Planorbis (Bathyomphalus) luridus, Pfeiffer. 



3 Cuba ; ex c. Dr. F. Stoliczka. 



54. Planorbis (Bathyomphalus) spirorbis, Muller. 



30 England and Germany ; coll. G. Nevill, Esq. 



Sub-Genus ARMIGER, Hartm, 



55. Planorbis (Armiger) nautileus, Linn. 



[? = P. Crista, Linn., var.] 

 6 Yarkand ; coll. Dr. F. Stoliczka. 



56. Planorbis (Armiger) crista, Linn. 



[= P. imlricatus, Mull.] 

 15 England ; coll. G. Nevill, Esq. 



Sub-Genus (?) 



57. Planorbis singularis, Mss. 



2 Ovalau; ex. Museum Godeffroy. 



58. Planorbis oregonensis, Tryon, 



1 Steins V., Oregon ; ex c. Prof. W. Newcomb. 



Sub-family ANCYLEA, Mke. 

 Genus ANCYLUS, Geoffroy. 



1. Ancylns obliquus, Brad. & Sow, 



5 Lima j ex. c. A. Morelet, Esq. 



2. Ancylus tardus, Say. 



5 New York ; coll. Prof. W. Newcomb. 



3. Ancylus patelloides, Lea. 



3 Idaho ; ex. c. Prof. E. C. Stearns. 



