GASTEROPODA. 67 
Helix Townsendiana, Lea; Amer. Philos. Trans., vi. 99. pl. 23, f. 80. 
Binney; Boston Journ. Nat. Hist., ii. 371, pl. 13. United States 
Land Mollusks, ii. 161, pl. 19. Preirrer; Monog. Helic. Viv., 1. 341. 
ANIMAL corpulent, gradually tapering. Colour pale yellowish-green ; 
surface with rather sparse, feebly developed, elliptical granules, not 
seeming to have any definite arrangement ; margin of the locomotive 
disk rather broad, granulated, but regularly marked with radiating 
furrows. 
Brought from the Willamet district, Oregon. 
Figure 36, shell, with the animal. 
Hetix Lasiosa (Gould). 
Testa depresso-conica, subtus convexa, arcte umbilicata, luteo-cornea, 
pilis sericets quincuncialiter dispositis undique villosa: spira anfrac- 
tibus sex convexis, ultimo immodicé crescente et pone labrum valde 
contracto: apertura angusta, lunata ; labro albo, late revoluto ; fauce 
livida. 
Heliz labiosa, Gou.p ; Proceed. Bost. Soc. Nat. Hist., 1. 165. Aug. 
1846. Expedition Shells, 16. Bryney; United States Land Mollusks. 
Animat slender, tentacles much elongated Colour pale ferrugi- 
nous, with a lilac tint, darker on the neck. Whole surface even, the 
tentacles marked with coarse, elliptical granules, in longitudinal 
series ; no marginal border. 
Suet depressed, about equally convex above and beneath, with a 
very small umbilicus partially covered by the lip; yellowish horn- 
colour. The epidermis is strong, and everywhere hispid with very 
fine, short, shining hairs, closely arranged in lozenge, so that the 
principal lines seem to run diagonally to the axis of the shell. When 
denuded of the hairs, the lines of growth are found to be scarred, at 
regular distances, with transverse elevations, on which the hairs were 
seated. Whorls six, the last one increasing very rapidly near the 
aperture, having nevertheless a deep constriction directly behind the 
lip. Aperture more than usually vertical, narrow lunate. Lip white, 
