15] 
subglobose, light horn color, with four tumid smooth 
whorls, the body one large, the two uppermost very 
small and somewhat lateral ; aperture large suboval, 
outer lip extremely thin membranaceous ; pillar lip 
thick, white, grooved with a long canal terminating in a 
small but deep umbilicus. +. Devon, &c. 
Grenvus.—_IANTHINA. 
Ventricose, conoid, thin, transparent ; aperture trian- 
gular: columella straight, produced beyond the base 
of the outer lip, which has a sinus in the middle of 
it ; no operculum. 
1. Communis. Lam. 1.—/. p. 326.—I. Fraei.ts. 
of most writers.—Bl.t.37.f. la. (good).—I. Bicotor. 
Menke. p. 140.—Philippt. p. 164.—Herrx Ian- 
THINA. Lin. 1246.—Knorr. 2. t. 30. f. 2,3.—List. t. 
O72. f. 24.—Turt. D. p. 58.—D. p. 938.—Depressed, 
conoid, obtuse, nearly smooth, a few indistinct spiral 
striz on the base, the whorls flattish, violet beneath, 
pale lilac above, body whorl obtusely carinated; whorls 
four, pillar rectangular to the outer lip; aperture 
broader than long, columella straight and short. Diam. 
up to 1. but rarely so large, not common but sometimes 
found in Cornwall and Ireland. 
1. Hxieva. Lam. 2.—Sow. G.f. 2,3—Lesson. voy. 
