03 
F. p. 465.—Oblong, smooth, glossy, all the teeth 
erect. §...4: Sand in Torbay, closely resembling the 
last. 
GENUs.—MESODESMA. Desuayss. 
Oval, transverse or triangular, and usually shutting 
close: hinge with a narrow central spoon-shaped 
pit for the ligament, with an oblong and simple 
tooth on each side of tt. 
M. Deavurata.—Mactra D. Turt. BD tee 
5. f.8.—F. p.427 —An Mes. Denticutata? Gray 
in Grif. Cuv.—An Mes. Jaurnsit? Mag. de Zool. 
—Oblong, flattish, inequilateral, rounded at the elon- 
gated side and obtusely truncated at the other, opaque, 
strong, dull greyish white under a shining bronzed skin 
reflecung metallic lustres, coarsely and irregularly 
striated transversely, with a few coarser ridges towards 
the hinge; beaks rather prominent and pvinted, a little 
inclined to the longer side. &%...14. Zwmouth, rare. 
M. Donaciitia. Desh in Lam.—AMPuipvesMA. D. 
Lam. 2.—Donax PieBeta. Mont. t. 5. f. 2. p. 107. 
—Turt. B. p. 127.—Dor. Cat. p. 38. t. 5. f. 13.— 
Turt. C. D. p. 102.—F. p. 434.—D. p. 102.-- 
Erycina P. Sow. G. f. 3.—Reeve. t. 45. f. 4—Ovate 
triangular, wedge-shaped, posteriorly very short and 
