42 NEW-YORK FAUNA — MOLLUSCA. 
HELIX PERSPECTIVA. 
PLATE Ill. FIG. 38. a. sp. —(STATE COLLECTION.) 
Helix perspectiva. Say, Journal Academy Nat. Sciences, Vol. 1, p. 18. 
H. id. Ip. Long’s Exped. St. Peters, Vol. 2, p. 258. 
Description. Shell small, orbicular, very much depressed. Whorls six, transversely 
striated, with raised parallel acute lines, forming strongly impressed furrows between them. 
Umbilicus very large, resembling an inverted spire ; in diameter equalling nearly the breadth 
of the body-whorl, and exhibiting distinctly all the volutions. 
Color. Yellowish, sometimes tinged with rufous. 
Diameter, 0°3, Height, 0-1. 
Common in moist places, in the western district of the State. Found originally by Lesueur 
near Lake Erie. Through inattention, the magnified figures B. c. are said to be of the natural 
size. 
HELIX PROFUNDA. 
PLATE Ill FIG. 37. a. s. c.—(STATE COLLECTION ) 
Helix profunda. Say, Journ. Acad. Nat. Sciences, Vol. 2, p. 160. 
Hi. richardi.  Ferussac, Hist. des Moll. pl. 70, fig. 4. : 
H.  profunda. Say, American Conchology, pl. 37. 
Description. Shell moderately large, convex, regularly ascending to the slightly elevated 
spire. Whorls five, regularly rounded, with deeply impressed oblique wrinkles. Aperture 
oblique, dilated. Lip reflected and (except near the superior angle) flat, with a slightly pro- 
jecting tooth-like callus on the inner edge towards the base. Umbilicus large, profound, and 
exhibiting all the volutions ; base somewhat excavated. The lower margin of the lip is almost 
reflected over the umbilicus. 
Color. Uniform pale corneous or light ashen grey ; or more frequently a revolving rufous 
line on the body-whorl, which is almost concealed upon the spire by the suture, but which 
passes for a short distance above the aperture. Lip white on its reflected edge. 
Diameter, 0°9. Height, 0°6. 
Var. a. with many rufous lines. 
This species was sent to me from the western part of the State. It occurs also in Ohio 
and Missouri. 
