FRESHWATER AND LAND SHELLS. 17 



Paludina hyaltna. Plate XXIII. fig. 81. 



Testa obluso-conica, carinata, pellucida, infrU complanata ; anfractibus quaternis ; suturis 

 valde impressis ; apertura lati rotundat&. 



Shell obtusely conical, carinate, diaphanous, flattened below ; whorls four ; sutures 

 very much impressed; aperture widely rounded. 



Hab. near Poland, Ohio. Dr Kirtland. 



Cabinet of Mr Hyde. 

 Diam. -2, Length '2, of an inch nearly. 



Remarks. — Dr Kirtland sent the only specimen of this shell I have 

 seen to Mr Hyde, under the impression that it was a deformed speci- 

 men of Planorhis. Mr Hyde communicated it to me as a new spe- 

 cies, of which there cannot, I think, be a doubt. It is very remarkable 

 for the flatness of the inferior portion of the last whorl, and for the 

 carina on the periphery which this causes. It is perhaps thinner and 

 more transparent than any species yet described. 



Melania inflata. Plate XXIII. fig. 98. 



Testa conica, inflata, tenebroso-cornea ; apice obtuso ; anfractibus quinis, subconvexis ; co- 

 lumella notata ; labro valdh expanse. 



Shell conical, inflated, dark horn-colour ; apex obtuse; whorls five, rather convex; 

 columella marked; outer lip spread out. 



Hab. Indian Creek, Vir., West of Alleghany Mountains. P. H. 

 Nicklin. 



My Cabinet. 



Cabinet of P. H. Nicklin. 



Diam. -4, Length -6 inches. 



Eemarhs. — I am indebted to Mr Nicklin for this new species, hav- 



VI. — E 



