NATURAL SCIENCES OF PniLADELPHIA. 249 



Patula strigosa, Gould. Proc. Phila. Ac. N. Sc, 1872, 135. 



Patula Idahoensis, Newc. Same as last, 136. 



Patula Cooperi, W. G. Binu. Same as last, 136. 



Patula perspectiva, Say. Same as last, 136. 



Patula solitaria, Say. Am. Journ. Conch., VIT. 176. 



Patula Hemphilli, Newcomb. Am. Journ. Conch., VI. 207, pi. ix. fig. 8. 



Patula Cooperi, W. G. Binn. Am. Journ. Conch., VI. 207. Jaw. 



Sagda connectens. Ad. Am. Journ. Conch., VII. 175. 



The marginal teeth are quadrate, not aculeate, proving the genus to 

 belong to the Helicea, not to the Vitrinea. 



Sagda Haldemaniana, Adams. Am. Journ. Conch., VII. 175. See 

 last species. 



Sagda Jayana, Adams. Ann. Lye. N. H. of N. Y., X. 219. See last 

 species. 



Helix circumfirmata, Redf. {Microphysa.) Ann. Lye. N. H. of N. Y., 

 X. 221. 



The species shown to belong to the Vitrininm. 



Helix turbiniformis, Pfr. (Ificrophysa.) Ann. Lye. N. H. of N. Y., 

 X. 79, pi. ii. fig. 2. 

 Jaw unusual in the genus resembling that of BuUmulus. 



Helix Boissieri, Charp. (^Leucochroa.) Ann. Lye. N. H. of X. Y., 

 X. 220. 

 The species shown to be more nearly related to Helix than to any of the 



Vitrinina. 



Helix Yatesii, J. G. Cooper. {Gonostoma.) Am. Journ. Conch., VII. 

 176. 



Helix polygyrella, Bland and Cooper. {Polygyrella.) Proc. Phila. 



Ac. N. Sc, 1872, 136. 



. Helix microdonta, Desh. (Polygyra.) Am. Journ. Conch., VI. 205. 



Helix septemvolva, Say. (Polygyra.) Am. Journ. Conch., VI. 206. 



Helix fastigans, L. W. Say. (Polygyra.) Am. Journ. Conch., VII. 176. 



Helix stenotrema, Fer. (Stenotrema.) Am. Journ. Conch., VI. 207. 



Helix loricata, Gould. (Triodopsis.) Am. Journ. Conch., VI. 206. 



Helix inflecta, Say. (Triodopsis.) Am. Journ. Conch., VI. 206. 



Helix palliata, Say. (Mesodon.) Proc. Phila. Ac. N. Sc, 1872, 136. 



Helix obstricta, Say. (Mesodon,.) Same as last, 136. 



Helix devia, Gould. (Mesodon.) Proc. Phila, Ac N. Sc, 1872, 136. 



Helix similaris, Fer. (Dorcasia.) Am. Journ. Conch., VII. 176. 



Helix Newberryana, W. G. B. Am. Journ. Conch., VII. 190, pi. xvii. 

 fig- 3, 4. 



n 



