NATURAL SCIENCES OF PHILADELPHIA. 249 
Patula strigosa, Gould. Proc. Phila. Ac. N. Sc., 1872, 135. 
Patula Idahoensis, Newc. Same as last, 136. 
Patula Cooperi, W.G. Binn. Same as last, 1386. 
Patula perspectiva, Say. Same as last, 136. 
Patula solitaria, Say. Am. Journ. Conch., VII. 176. 
Patula Hemphilli, Newcomb. Am. Journ. Conch., VI. 207, pl. ix. fig. 3. 
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. Lyc. N. H. of N. Y., X. 219. See last 
species. 
Helix circumfirmata, Redf. (Microphysa.) Ann. Lyc. N. H. of N. Y., 
X. 221. 
The species shown to belong to the Vetrining. 
Helix turbiniformis, Pfr. (Microphysa.) Ann. Lyc. N. H. of N. Y., 
I WO, Olle Tl, tie, By 
Jaw unusual in the genus—resembling that of Bulimulus. 
Helix Boissieri, Charp. (Leucochroa.) Ann. Lyc. N. H. of N. Y., 
X. 220. 
The species shown to be more nearly related to Helix than to any of the 
Vitrinine. 
Helix Yatesii, J. G. Cooper. (Gonostoma.) Am. Journ. Conch., VII. 
176. 
Helix polygyrella, Bland and Cooper. (Polygyrella.) Proc. Phila. 
Ac. N. Sc., 1872, 186. 
‘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. (7Zriodopsis.) Am. Journ. Conch., VI. 206. 
Helix inflecta, Say. (TZ riodopsis.) Am. Journ. Conch., VI. 206. 
Helix palliata, Say. (JJesodon.) Proc. Phila. Ac. N. Se., 1872, 136. 
Helix obstricta, Say. (Mesodon.) Same as last, 136. 
Helix devia, Gould. (Mesodon.) Proc. Phila. Ac. N. Sc., 1872, 136. 
Helix similaris, Fér. (Dorcasia.) Am. Journ. Conch., VII. 176. 
Helix Newberryana, W.G.B. Am. Journ. Conch., VII. 190, pl. xvii. 
fig. 3, 4. 
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