205 



with the tip rounded, the dorsal edge nearly straighl, moderately 

 sloping, and very long; ligament sunken; umbonal ridge and 

 liexure obsolete ; lateral tooth approximate. 

 Hab. ? Mus. Britannicum. 



140. Tellina planissima (pi. lix. f. 124. and pi. Ixii. f. 197.) 

 Anton, Verzn. Conch, p. 4 ; Ab. mid Bes. Conch, part 5. t. 5. f. 2; 

 Tellinides rosea, Soto. Gen. Shells, f. 1; lleeve, Conch. Svst. t.56. 

 f. 1. 



T. testa ovata, tenuiuscula, inaequivalvi, insequilaterali, com- 

 pressa, extus intusque rosea, coucentrice snbstriata ; margine ven- 

 trali convexiusculo ; dorsali utrinque declivi, antice couvexo, pos- 

 tice subrecto ; latere antico rotundato ; postico longiore, rotun- 

 dato-cnneiformi ; ligamento prominente; flexura subobsoletaj 

 costella interna in valvula complanata postice radiante; dente 

 lateral! parvo, approximato. 



Var. Candida. 



Ovate, rather thin, inequivalvc, inequilateral, compresseil, rose- 

 coloured both within and without, concentrically substriated ; ven- 

 tral margin moderately convex, the flexure not quite obsolete; 

 dorsal etlges sloping, the anterior convex, the posterior nearly 

 straight; anterior extremity rounded; posterior side the longer 

 and of a rounded wedge-shape ; ligament prominent ; an internal 

 rib radiating posteriorward in the flattened valve; lateral tooth 

 small, approximate. 



Var. Quite white. 



Moluccas. 



The OpaUna of Chemnitz is closely allied to, if not identical 

 with, the white variety of this shell. 



141. Tellina (Tellinides) puepurascens (pi. Ixii. f. 194.) 

 Broderij) and Sowerb/j, Zool. Jour. vol. iv. p. 363 ; Haul. Des. Cat. 

 p. 74. sup. t. 9. f. 18 ; ZooL Beechey's Voy. t. 42. f. 2. 



T. testa oblongo-ovali, tenui, compressa, nitidiuscula, subsequi- 

 laterali, roseo-purpurascente, pellucida, striis radiantibus et con- 

 centricis confertissime decussata ; margine ventrali convexiusculo ; 

 dorsali utrinque paululum declivi, antice convexiusculo, postice 

 subrecto; latere antico minime longiore, rotmidato; extremitate 

 postica subangulata, subemarginata ; ligamento prominente ; flex- 

 ura omnino obsoleta ; dente lateral! approximato. 



Oblong-oval, thin, compressed, rather glossy, nearly equilateral, 

 purpKsh-rose coloured, pellucid, decussated by most crowded radi- 

 ating and concentric stride; ventral margin moderately convex; 



X 2 



