404 
MOLLUSCA. 
Pyramidella terebettum.. — The Wimble Pyramidella. 
Plate LXXXV. fig. 26. 
Smooth, glossy, white, with reddish-brown fasciae; columella 
recurved ; inside of the lip smooth. One and one-fourth inches 
long. Inhabits the American seas. 
Genus 49. — TORNATELLA.— Lamarck . 
Generic Character. — Shell convolute, ovate-cylindrical, usu¬ 
ally transversely striated, and destitute of epidermis; aperture 
oblong, entire, with margin of the outer lip acute; one or seve¬ 
ral folds at the base of the columella. 
Tornatella fasciata. — The Banded Tornatella. 
Plate LXXXV. fig. 27. 
Covered with fine transverse striae; spire produced, apex 
acute; aperture straitened, columella with one plait; purplish- 
red, with two white transverse fasciae. Inhabits the coast of 
Britain. 
TRIBE IV.-MACROSTOMA. 
Shell auriform, with the aperture very wide, and the margins 
disunited; without any columella or operculum. 
Genus 50.—HALIOTIS. — Linnaeus. 
Generic Character. — Shell ear-shaped, usually depressed; 
spire short, sometimes depressed, and nearly lateral; aperture 
extremely large, oblong-ovate, and entire in the adult state; disc 
perforated with holes, disposed in a line parallel to the left mar¬ 
gin, which commences by a notch. 
Haliotis asinina. — The Assinine Haliotis. 
Plate LXXXV. fig. 28. 
Internal margin very broad, inside pearly, smooth, shining, 
iridescent, reflecting green, pink, and orange; back clouded with 
brown and green, and striated longitudinally, oblique; spire very 
short. Two and a half inches long. Inhabits the sea at Mol- 
lucca. 
Genus 51. — STOMATIA_ Lamarck. 
Generic Character. —Shell ear-shaped, imperforate, spire pro- 
