DQNAX. WEDGE-SHELL. 
41 
DONAX. WEDGE-SHELL. 
Shell with two valves* with the cartilage side 
very obtuse and abrupt : hinge with two primary 
teeth* and a single remote lateral-one on the poste¬ 
rior side. 
i J. Donax Trunculus. Smooth Wedge-shell. 
Lister, pi.3/6-f- 217— Pennant , pi. 58. f. 1— Da Costa, 
pi. 14. f. 3—Lmn. Trans, vi. pi. 16. f. IS, 14, 15, 16— Do- 
jtfcon, pi.29. f. 1— Dorset Cat. pi. 6. f. 3. 
Shell oblong, rounded at one end and a little produced at 
the other, glossy, covered with a thin pale chesnut or 
olive-green skin, finely striate longitudinally with often a 
fesvirregular transverse stria} near the pointed end, a little, 
contracted at the margin near the pointed end : color yel¬ 
lowish-white, with a few faint rays from the beak to the 
margin, and generally a few brown and purple transverse 
bands -j the margin finely toothed : beaks small, near the 
abrupt end ; inside rich purple : length more than half an 
inch ; breadth an inch and a half. 
Sandy coasts of England, Ireland, and Scotland, v. v. 
J 2. Donax denticulata. Toothed Wedge-Shell. Fig. 1 9. 
Litter, pi. 376. f. 218— Dorset Cat. pi. 5. f. 12— Pen- 
mi, pi. 58. f. 2. 
Donax crenulata. Donovan , pi. 24. 
Shell strong, thick, somewhat wedge-form, abruptly 
doped at the larger end, where it is truncate and much 
more convex, with a prominent ridge from the beak to the 
margin, dividing the slope in the middle; finely striate lon¬ 
gitudinally, and punctured in the interstices; on the part 
of the slope next the margin, towards the hinge, the strias, 
become transverse and undulated: color whitish, brown- - 
ish, yellowish or purple, with mostly a few longitudinal 
purple rays ffom the beak ; inside white, the margin finely 
notched: beaks near the larger end j teeth strong, with a 
lateral one on each side the middle ones : length seven 
lines; breadth an inch. 
On Weymouth and Dawlish sands : very rare. v. m. 
e 3 3. Donax 
