240 
VENUS. 
18. Venus granulata. Granulated Venus. 
Lister, pi. 338. f. 175— Donovan, pi. 83. 
Shell thick, convex, strongly xibhed both longitudinally 
and transversely, giving the surface a distinctly granulated 
appearance, white variegated with chocolate-brown spots and 
streaks ; inside dark glossy purple, unth the margin notched: 
beaks turning much to one side, with an oval heart-shaped 
depression under them ; the cartilage slope with generally 
a few dark transverse lines : length seven-eighths of an 
inch ; breadth an inch. 
* Western coasts, and North Britain: very rare. 
J9. Venus deflorata. Fading Venus. 
Lister , pi. 425. f. 2/3— Pennant, pi. 60, lower 
Montagu , pi. 3. f. 4. 
Shell oblong, somewhat oval, thin, semitransparent, of 
a whitish color tinged or faintly radiate with purple, marked 
with longitudinal waved strim, and crossed by a few trans¬ 
verse wrinkles, giving it a net-like appearance, especially 
at the cartilage end; inside purplish, with the rays often 
visible, and the margin notched: beaks a little on one side, 
not much produced nor reclined: hinge with two .teeth in 
each valve, one of them large, the other extremely small: 
length an inch ; breadth an inch and three-quarters. 
Western coasts : very rare. v. m. 
B. Someirliat orbicular, 20 to 25. 
20. Venus Tigerina. Lenticular Venus. 
Lister , pi. 337- f.. 174— Montagu, pi. 4. f. 1—Xfnn. 
Trans, viii. pi. 2. f. 5— Dorset Cut. pi. 1. f. 14. 
Shell nearly orbicular, thin, Hat, white with sometimes 
a purplish tinge on the edges, striate longitudinally, and 
crossed by numerous fine transverse lines; inside smooth, 
glossy white, with the margin plain: beaks small, pointed, 
turning a little to one side: length three-quarters of an 
inch ; brendth nearly an inch. 
The younger ones of V. decussata may sometimes tie 
mistaken for this shell, but the angular shape of the carti¬ 
lage side in this latter one, and the stronger striae at that 
end, besides the difference in color, immediately distinguish 
them. 
