64 TESTACEOUS MOLEUSCA. 
CARNATA. Poli. 1. t. 15. f. 1. Oval-oblong, sub-inequilatere], 
pointed at the rather shorter anterior extremity, flat, pinkish flesh 
colour, with two paler anterior rays, finely striated concentrically : 
hinge with two cardinal and one lateral tooth in one valve; one 
cardinalin the other. 1..2.— Mediterranean. 
T. Purcaetta. Lam. 23.—Born.t.2. f. 10.— Poli. 1. t. 15. 
J. 8:—W.S.t.1.f. 4. Small, ovate-oblong, depressed, shining, nar- 
row, pale with numerous rosy rays and fine transverse strie : anterior 
extremity beaked and rather shorter: hinge with at least one lateral 
tooth.— Mediterranean, Gulf of Tarentum. 
T. Fapura.* Gmel. 3239.—D. p. 92.—Lam. 24.—Don. t. 
97.—Turt. B. p. 101.—W. t. 3. f. 23.—Wood. G. C.t. 45. f. 4. 
Ovate, posteriorly rounded, anteriorly contracted; thin, glossy, 
white, one of the valves obliquely striated the other smooth : hinge 
with a single tooth and minute adjacent denticle in one valve, in the 
other two with a rounded lateral one. 4..3.—N. Europe.3 
T. Tenuis.* Lam. 25.—Dor. Cat. t. 5. f. 3.—Turt. B. p. 
107.— Wood. G. C. t. 44. f. 3, 4.—List. t. 405. f. 251.—Ch. f. 
117.—Don. t. 19. f.2.— W. t. 3. f. 22.—T. Bataustina. D. p. 
93. Ovate-triangular, rather truncated and angular at the anterior 
extremity, reddish with generally deeper bands, thin, rather flat, 
nearly smooth and polished.— England, §c. 
T.Extnis. Lam. 26.—£. 3.p. 1013.—Del. t. 6. f. 6. Ovate- 
triangular, very thin flattened and pellucid, pale crimson, with very 
fine transverse strize, and obtusely angular at the short and oblique 
anterior extremity : no lateral teeth. 3. 
T. Donactna.* Lin, 1118.—D. p. 89.—Lam. 27.—Turt. B. 
p. 102.t. 8. ff4.—W. t. 4. f. 31.— Mont. t. 27. f. 3.—T. Varre- 
GATA. Polit. 1. t. 15. f10. Oval with the beaks close to the 
anterior extremity, which being abruptly sloped puts on the ap- 
pearance of a Donax, finely striated concentrically, semi-transparent, 
yellowish within and without with red often interrupted rays : hinge 
in one valve with a bifid cardinal tooth, an additional simple one 
and lateral teeth on each side in the other.— Mediterranean, §c. 
T. Niripa.— Poli. 1. t. 15. f. 2. 34.—Lam. 28.— Phil. p. 27. 
—Gual. t. 77. Oblong, very compressed, equilateral, anteriorly 
narrowed, polished, pale flesh-colour with tawny zones, ligamental 
edge straight, with delicate and regular transverse strie, anteriorly 
in one valve, with coarse and distant ones : inside tawny orange, no 
lateral teeth, a single bifid cardinal in one valve, a bifid and simple 
smaller one in the other. 12.— Mediterranean.—Variety, whitish 
or sulphur-coloured. 

3 We have given a copy of the Fracitutssima of Ch. f. 101. the 
Vitrea of Gmelin (D. p. 92.) which bears much resemblance in shape 
to this species, but has no lateral tooth. 
