300 TELLINIDiE. 



T. TENUIS, Da Costa. 



Suboval, compressed, glossy, devoid of epidermis, smooth, not 

 acuminated behind ; a single lateral tooth. 



Plate XIX. fig. 8. and (animal) Plate K. fig. 3. 



Tellina incartiata. Lister, Hist. Conch, pi. 405, f. 251. 



„ „ Chemn. (not Linn.) vol. vi. p. 119, pi. 12, f. 110. 



„- planata, Penn. (not Linn.) Brit. Zool. ed. 4, vol. iv. p. 87, pi. 48, f. 29. 



— Burrows, Introd. Conch, pi. 5, f. 3. 

 „ polila, PuLTENEY, Hutchins, Dorset, p. 29. 

 „ tenuis, Da Costa, Brit. Conch, p. 210. — DoNov. Brit. Shells, vol. i. pi. 



19, f. 2. — Mont. Test. Brit. p. 59. — Linn. Trans, vol. viii. 



p. 52.— Dorset Catal. p. 30, pi. 5, f. 3.— Turt. Conch. Diction. 



p. 169.— Turt. Dithyra Brit. p. 107.— Flem. Brit. Anim. p. 



436.— Macgill. Moll. Aberd. p. 280.— Brit. Marine Conch. 



p. 69.— Brown, Illust. Conch. G. B. p. 100, pi. 40, f. 19.— 



Wood, General Conch, p. 155, pi. 44, f. 3, 4. — Lam. Anim. s. 



Vert. (ed. Desh.) vol. vi. p. 197. — Index Testaceol. pi. 3, 



Tell. f. 22.— Philippi, Moll. Sicil. vol. i. p. 26, and vol. ii. 



p. 22. — Hani,. Recent Shells, p. 64. — Hanl. in Thesaur. 



Conch, vol. i. p. 287, pi. 58, f. 81, 82. 

 „ exigua (VAR.), PoLi, Test. Sicil. vol. i. pi. 15, f. 15, 17. 

 „ halaustina, Dillw. (not Linn.) Recent Shells, vol. i. p. 93. — Chemn. 

 Conch. Cab. vol. vi. p. 124, pi. 12, f. 117 ? 



This pretty and well-known species is of a suboval shape, 

 very thin, translucent, extremely glossy, and, especially the 

 left valve, much compressed. It is not greatly inequi- 

 lateral ; the surface is almost smooth, and extremely vari- 

 able in colouring, ranging from pale crimson, through 

 orange and yellow, to almost white, and often shaded with 

 paler and darker zones of the same tint, but never rayed, 

 spotted, or marbled. The ventral margin is convex in 

 front, and straighter, less ascending, and subinflected be- 

 hind. The anterior side is rather the longer, and tapers a 

 little at the extremity, where it is well rounded, the front 

 dorsal edge, declines but very moderately, and is more or 

 less convex or even subarcuated. The j^osterior termina- 



