42 v^IVIPARA. 



Doubtful, Spurious, and Extra-limit al Species. 



This completes the list of known North American Viviparae. 

 There now follow notices of doubtful species and those which 

 have been erroneously referred to the genus. 



Vivipara alleghanensis, Green — Shell conical ; spire elevated and rather 

 obtuse ; whirls four, rounded and nearly smooth, the ultimate whirl 

 the largest ; mouth oval, slightly angular near the upper part of 

 the peristome, where it adheres to the body whirl ; umbilicus none ; 

 epidermis dark brown color. Length two-tenths of an inch. Fine 

 specimens of the shell are in the cabinet of Mr. W. Hyde. Moun- 

 tains of Pennslyvania. {Green.) 



Paludina alleghanensis, Gkeen, in Doughty's Cabinet of Nat. Hist., 

 II, p. 291 (1832). 

 The above is Green's description. I have not been able to obtain 

 any information about the species. From the size and shape of 

 the shell I should incline to believe it to be an Amnicola. 

 Paludina unicolor, Lam., from South Carolina, mentioned by name only by 

 Wheatley in his Cat. of U. S. Shells, p. 39. I have never known 

 of any such species having been found there. 

 Vivipara Bengalensis, Lam. Pal. elongata, SwAiNSON — Pal. multilineata, 

 Say, Binney's ed., p. 146. — Pal. vitula, Rafinesque, (Bengal.) Atl. 

 Journ., V. 109), said to have been found in St. John's River, Fla. 

 Mr. Say's words are as follows : " Capt. Leconte presented me with 

 a shell which, he informed me, he found in the River St. John, 

 Florida. I described it nearly four years since under the name 

 of multilineata ; but, recently, being about to publish it, on a more 

 attentive examination and comparison with a specimen of the elon- 

 gata from Calcutta, given to me by Mr. Hyde of Philadelphia, I 

 have concluded that it varies from that specimen only in having 

 the umbilicus a little smaller." 

 See also Ampullaria rotundata. 



I have seen some specimens said to have come from Florida which 

 might be referred to this species, but at present 

 rig. lb. cannot consider its existence there sufficiently esta- 



blished to admit it in the list of American Vivipara. 

 Haldeman (Mon., p. 24, pi. vii,f. 3,4, thus describes 

 and figures it, considering it probable that it was 

 accidentally introduced into Florida together with 

 Ampullaria rotundata, Say. They are both Calcutta 

 shells : — 



" Shell lengthened, conic, and polished ; com- 

 posed of six or seven convex whirls, the surface of 

 which is covered with minute transverse wrinkles, 



