TELLINA. 183 



minute longitudinal striae, which require a lens to 

 detect them ; the inside is yellow ; the hinge has two 

 small primary teeth, with a deep, linear hollow, termi- 

 nating at the base of one of the prominent lateral teeth. 

 Length an inch and a quarter ; breadth rather more. 



Inhabits the Indian Ocean, and has also been found, 

 though rarely, in England. Dr. Pulteney, who first 

 described it as British, under the name of T. prqficua, 

 met with it on the north shore at Poole, and at Wey- 

 mouth, in Dorsetshire. 



THREAD-GIRDLED TELLEN. 



PL 42. /. 4, 5. Mr. Sowerby. 



71. Tellina Radula. T. testa lentiformi, convexa, fransversim striata ; 



margine anteriore juxta cardinem rectiuscula. Act. Soc. Linn. 8. 



p. 54. 

 Shell of a lens-shaped, convex, transversely striated ; anterior margin 



near the hinge, almost straight. 

 Petiver Gaz. pi. 93. f. 18. Favanne Conch, pi. 48. f. 3. Donov. Brit. 



Shells, pi. 130. Mont. Test. Brit. p. 68. pi. 2. f. 1, 2. Penn. Brit. 



Zool. 1812. 4. p. 181. 



A white shell, with a brown epidermis, nearly orbi- 

 cular, and covered with close set, rough, concentric 

 striae ; there is a small, oblong, heart-shaped depression 

 on the anterior margin, close to the beak ; and a slight 

 furrow running from the posterior part of the apex, in 

 each valve, and meeting at the margin, where it is a 

 little inflected. Inside chalky-white; margin whiter 

 than the rest, and slightly puckered ; hinge with two 

 small primary teeth in each valve; no lateral teeth. 



