362 TESTACEOUS MOLLUSCA. 
forked, and always much narrower (if not obsolete) in front; ventral 
edge arcuated, finely crenulated; lunule impressed, cordate; front 
dorsal area flattened, smoothish; beaks acute, much inclined and in- 
curved; inside whitish, stained in front with livid purple. 14...1%- 
Mediterranean. 
* Ventral edge entire. 
Venus Brueuieri (t. 15, f. 59), Hanl. Z. P. 1845, p. 21.— 
(E. t. 258, f. 4).—Taprs B. Sow. Th. 2, t. 151, f. 1380, 1.—Desh. 
Vener. p. 183. Oblong, somewhat glossy, convex, very inequilateral, 
either pale brown with a few white rays, or ash-brown with distant 
interrupted narrow darker rays; radiated with costelle in front, and 
elsewhere with sulci, of which the central ones are subimbricated, the 
sculpture laterally subdecussated; ventral and front dorsal edges 
scarcely convex, the latter almost horizontal; hinder dorsal edge 
somewhat convex and sloping; anterior extremity bluntly and 
obliquely biangulated ; beaks adorned in front with a short livid ray ; 
lunule nearly obsolete; hinge-margin purple. 1%. Ceylon. Teeth 
narrow and parallel. 
Venus (Saxrpomus) Nourratuir (t. 16, f. 16).—8. N. Conr. J. 
Philad. 7, p. 249, t. 19, f. 12.— Desh. Vener. p. 188? Suboval, 
truncated and gaping in front, white, with brown spots and stripes 
about the umbo and the ligamental margin; disk rough with con- 
centric striz which are elevated on the anterior slope; hinge with 
from 4 to 5 compressed primary teeth in one valve, and 4 in the 
other; pallial smus profound. 2. California. 
VENUS IMpPRESSA (t. 16, f. 27), Anton, Wiegm. Are. 1837. — 
V. FLExuosa, Sow. (not Lin.) Th. 2, p. 716, t. 156, f. 85, 6. — 
Anomouocarpta I. Desh. Vener. p. 118. Peaked-subcordate, solid, 
moderately inequilateral, ventricose, squalid. white, with vestiges of 
three ashy or brownish rays, the greater portion of the surface closely 
and bluntly ridged in a concentric direction, the shallow intervals 
smooth posteriorly; the anterior third with crowded decussated 
radiating costelle ; ventral edge entire, arcuated and rising behind ; 
ligamental edge much sloping, its area impressed, and usually livid ; 
umbones prominent; lunule very large, retuse ; inside wholly white. 
1t...14. HE. Indies. 
VeNus ASPERSA (t. 16, f. 34), Ch. 7, f. 488.— Lam. in part— 
E. t. 281, f. 4.—Tapes a. Sow. Th. 2, p. 684, t. 147, f. 52.—Desh. 
Vener. p. 164. Subovate-oblong, inequilateral, compressed, not solid, 
shining, fawn-coloured or pale chestnut, subradiated with large 
cloudy spots and small angular marks of blackish brown ; with con- 
centric grooves, which are dense posteriorly and more remote ante- 
riorly, so that the intervals become depressed lyre along the umbonal 
