TELLINA. 85 



strong on the anterior angle as in T. pallescens, and give it 

 less appearance of being toothed. 



rufescens. 29. Shell oblong, minutely decussated, 

 and rose-coloured ; one valve convex, the 

 other almost flat. 



Tellina rufescens. Chemnitz, vi. p. 105. t. 11. f. 97. 

 Tellina cruenta. Solanders MSS. Portland Cat. pi 58. 



lot 1360. 

 Tellina operculata. Gmelin, p. 3235. Wood's Conch, p. 



165. t. 42, f. 1. 

 Tellina, No. 11. Schroeter EinL iii. p. 5. 

 Knorr, vi. t. 12. f. 1. 



Inhabits the coasts of Brazil. Humphreys. 



Shell about an inch and a quarter long, and nearly twice as 

 broad, reddish, or rose-coloured all over, both inside and out, 

 and marked with obsolete transverse and still fainter longitu- 

 dinal striae ; the hinge is placed nearer the posterior than the 

 anterior end, and the latter has an angular slope, separated 

 in the convex valve by an elevated ridge, and by a corres- 

 ponding depression in the flat valve ; the hinge has two pri- 

 mary teeth, of which one is bifid, in the convex valve, and 

 only one in the other valve ; and there are no lateral teeth. 

 Tellina rufescens of Gmelin appears to be at most only a va- 

 riety of Venus decussata. 



flavescens. 30. Shell oval, yellowish-white, with 

 decussated striae, and one valve much more 

 convex than the other. 



, Tellina flavescens. Chemnitz, vi. p. 80. and p. 106. t. 11. 

 f. 98. 

 Tellina alba. Wood's Conch, p. 166. 

 Tellina operculata. Var. 0. Gmelin, p. 3235. 

 Tellina, No. 12. Schroeter EinL iii. p. 5. 



Inhabits the East Indian Seas. Chemnitz. 



Shell about an inch and three quarters long, and two inches and 

 three quarters broad, yellowish both inside and out, and dif- 

 fers from 2'. rufescens not only in colour, but also in being 

 narrower in proportion to the length, and much more strong- 

 ly striated. 



hyalina. 31. Shell oval, pellucid, flat, and finely 

 striated transversely ; valves unequal, and 

 margins very acute ; hinge somewhat lateral. 



