152 HELICID^. 



inch ; the smaller specimens being nearly globular, and 

 the large strongly convex above and below. The ex- 

 ternal color varies from corneous to dark chestnut ; that 

 of the parts about the aperture from whitish to Ught 

 rufous. The surface is usually covered with a hairy ves- 

 ture, but it is sometimes quite smooth. There is often a 

 tooth-like projection on the supei'ior and inner part of the 

 lip, opposite to the termination of the columellar tooth, 

 immediately above which there is an angular depression. 

 Large individuals have six whorls. The hp cannot strictly 

 be said to be reflected ; it is depressed below the surface 

 of the whorl, and a thin, testaceous deposit is laid back 

 against it, causing it to appear as if the lip were absorbed 

 into the whorl. I have once or twice noticed a single 

 white band on the outer whorl. 



Wood has figured this and the preceding species in the 

 supplement to his Index Testaceologicus, but has caused 

 great confusion by mistaking the present species for 

 JTelix fraterna, Say, which it resembles only in size. 



Another shell was described under this name by the 

 Abbd Brumati, in his " Catologo Sistematico," published 

 in 18.36 ; but it cannot displace Mr. Say's species, which 

 had been known by his name thirteen years. Hdlx 

 porcina of Mr. Say appears to correspond to this species 

 in an immature state. 



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