82 PEOCEEUIXGS OF THE ACADEMY OF [189!>. 



Fig. 6, Cypnea ladoviciana n. sp. Length 15 mm. 



Fig. 7. Cypnea vaiiyhani n. sp. Leugth 9 mm. 



Fig. 8. Cyprcea attenuata n. sp. Leugth 20 mm. 



Fig. 9. Cyprcea (Cyprcedia) subcanee/lata n, sp. LeogthlG mm. 



Fig. 10, BimeUa rugostoma n. sp. Length 20 mm. 



Fig. 11. Potamides (Telescopiiim) chamberlatni n. sp. Length 



35 mm. 



Fig. 12. Ampullina morgani n. sp. Length 31 mm. 



Figs. 12, 13. Adeorbis iiifrapUcatus n. sp. Alt. Ih, diam. 3 mm. 



The Academy is indebted to the liberaUty of Dr. Chamberlain 

 for the ilhistrations, which are drawn by Dr. J. C. McConnell of 

 Washington. 



