36 NEW-YORK FAUNA — MOLLUSC A. 



Helix hirsuta. 



PLATE III. FIG. 37. a. b. — (STATE COLLECTION) 



Helix hirsuta. Say, Journ. Acad. Nat. Sc. Vol. I, p. 17. 



H. id. Binney, Journ. Nat. Hist. Vol. 3, p. 365, pi. 10, fig. 3. 



H. id. Lamarck, An. sans veit. Ed. Brux. Vol. 3, p. 308. 



H. id. Gould, Invertebrata of Mass. p. 175, fig. 116. 



Description. Shell rather small, subglobose. Whorls five, slightly rounded, and covered 

 with numerous short rigid hairs. Suture distinct. Aperture very narrow, almost closed by 

 an elongated lamelliform tooth on the pillar-lip, which extends nearly from the middle 

 of the base to the junction of the outer lip with the body-whorl. Lip much depressed and 

 reflected back on the outer whorl, and nearly incorporated with it, with a deep fissure near 

 the centre of the inner margin. Often a small tooth-like projection about the centre of the 

 margin of the outer lip. 



Color. Epidermis brownish. Animal whitish ; head and tentacles slate-colored. 



Diameter of shell, - 3. 



This species is common in this State, and is very abundant throughout the Western States. 

 In cabinet specimens, it is often found divested of its hairy epidermis. It can scarcely b&- 

 confounded with any other species. 



Helix elevata. 



PLATE III. FIG. 20. a. B.— (STATE COLLECTION.) 



Helix elevata. Say, Jour. Acad. Nat. Sc. Vol. 2, p. 154. 



H. knoxvilliana. Id. American Conchology, plate 37. 



H. elevata. Bisney, Jour. Nat. Hist. Vol. 1, p. 191, pi. 19. 



Description. Shell large, convex, elevated, almost conical. Whorls nearly seven, some- 

 what convex, with minute oblique striee. Lip reflected, more broadly so towards its lower 

 inner margin, which is somewhat thickened. Umbilicus none. Pillar-lip with a stout white 

 obliquely curved tooth. 



Color. Yellowish horn ; reflected edge of the lip and the tooth white. Animal ash-brown 

 above. 



Diameter of the shell, 0"9. Height, - 6. 



This species, which is rather common in the Western States, has likewise been observed 

 in Pennsylvania. I have not succeeded in detecting it in this State, but it will probably be 

 found in the western district. 



