74 TESTACEOUS MOLLUSCA. 



distinct : convex valve with the anterior slope flattened : inside with 

 two anterior obliquely radiating ribs. ly. 



T. Striata.— Solen S. Chem. f. 57, 8.— Gm.el. 3227.- D. p. 

 66. — W. t. 3.f. 24. Oval, diaphanous, subequivalve, posteriorly 

 rather longer and rounded, anteriorily obtuse, ventral edge slightly 

 arcuated : glossy, thin, rather depressed, strongly striated trans- 

 versely, pink with numerous narrow white rays, a solitary all but 

 primary lateral tooth in one valve, cardinal teeth obsolete. 1 . . 1 J. 

 — Nicohar. 1 



T. Emarginatus. Sow. Tank. Oblong, inequilateral, smooth- 

 ish, anteriorly sub-angulated and emarginated, the slope concave in 

 both valves, posteriorly twice as long, subattenuated and rounded : 

 umbones pale orange and within two darker oblong orange stains, 

 passing from the umbo to each muscular scar : a symmetrical fold in 

 each valve. — Brazil. — T. Oblonga of Chemnitz, f. 87, much re- 

 sembles it, bat has no lateral tooth. 



T. Coccinea.— Tellina C. Gmel. 3236.— D. p. 87.— Ch.f. 

 109. — W. t. 4. fi 42. Oval, inequi valve, rather compressed, 

 rounded at both ends, posteriorly rather longer and broader, very 

 thin, pellucid, uniform rose-colour with closely set transverse striae, 

 the alternate ones only crossing the anterior slope : nymphse pro- 

 minent : in one valve two small cardinal teeth with an approximate 

 lateral in the other. £ . . If — Mediterranean ? 



T. Purpureus. Brod. and Sow. Z. J. 4. — Beechey Zool. t. 

 42. fi 2. — An. Tellina Rosea Lam.? Oblong, compressed, sub- 

 equilateral, purplish rose-colour, prettily decussated, anterior side 

 sub-acuminated and slightly emarginated. 1|- . . 2 t 3 q. — Pacific. 



T. Triangularis.— Tellina T. Chem.f.S5.—D.p.79. — Desh. 

 in Lam. vol. 6. p. 209.— W. t. 4. /. 33.— T. Politus. Sow. 

 Tank. Ovate-triangular, greyish white, transverse, inequilateral, 

 depressed, posteriorly shorter and rounded, anteriorly produced 

 narrowed and subacuminated : thin, with transverse strise which an- 

 teriorly in one valve diverge suddenly towards the ventral margin : 

 hinge with two teeth, no lateral ones. If . . 2. — Cape of Good Hope. 



CORBIS. 



Transverse, equivalve, without anterior flexuosity, slightly de- 

 pressed; beaks incurved towards each other ; hinge with two 

 primary teeth, and two lateral ones, of which the posterior one is 

 nearest the cardinal teeth ; muscular impressiotis simple. 



C. Fimbriata. Lam. 1. — Sow. G. — Meeve,t. 57. — Venus F. 

 Lin. \U3.—D.p. 187.— Ch.fi 448.— E. t. 286.fi. 3. W.t. 8. 



1 I almost doubt if Ovalis of Sowerby is distinct from this, and 

 even as to either belonging to this genus and not to Psammotea. 



