NATURAL SCIENCES OF PHILADELPHIA. 249 



Patula strigosa, Gould. Proc. Phila. Ac. N. Sc, 1873, 135. 



Patula Idaho ensis, Newc. Same as last, 136. 



Patula Cooperi, W. G. Binn. Same as last, 186. 



Patula perspectiva, Say. Same as last, 136. 



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



Patula Hemphilli, Newcomb. Am. Journ. Conch., VI. 207, pi, ix. j&g. 3. 



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



Sagda oonnectens. 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 K. Y., X. 219. See last 

 species. 



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

 X. 221. 



The species shown to belong to the Vitrinincs. 



Helix turbiniformis, Pfr. {MicropTiysa.) Ann. Lye. K. H. of K. Y., 

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



Jaw unusual in the genus — resembling that of BuUmulus. • 



Helix Boissieri, Charp. {LeucocTiroa.) Ann.- Lye. N. H. of N. Y., 

 X. 220. 



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

 VitiHnirKS. 



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 lorioata, Gould. (Triodopsis.) Am. Journ. Conch., VI. 206. 

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

 Helix palliata, Say. (Mesodon.) Proc. Phila. Ac. K 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. (Borcasia.) Am. Journ. Conch., VII. 176. 

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

 fig. 3, 4. 

 It 



