243 



in both the valves, and the whole surface is peculiarly glossy ; the 

 teeth are as in Punicea, but very small and indistinct. 

 Tumbez and Panama (Cuming). 



39. Tellina prora (pi. lx. f. 152.) Hanley, Zool.Proc. 1844. 



T. testa subtrigona, ovali, solida, convexiuscula, subajquilatcrali, 

 nitida, extus intusque pallide rosea; aut sublsevigata, aut concen- 

 trice et tenuissime striata, ; margine ventrali convexo ; dorsali 

 utrinque valde et subsequaliter declivi, subrecto ; extremitate pos- 

 tica acuminata ; flexura ventrali costaque umbonali subobsoletis ; 

 ligamento prominulo ; dentibus lateralibus rnagnis, antico ap- 

 proximato. 



Subtriangular, oval, tolerably convex, solid, glossy, nearly equi- 

 lateral, uniform pink both within and without, becoming deeper 

 towards the beaks, most delicately and regularly striated concen- 

 trically ; ventral edge convex ; dorsal edges nearly equally sloping, 

 slopes strong and scarcely at all convex ; posterior end acuminated ; 

 fold and flexure nearly obsolete ; ligament but little prominent, 

 both slopes being slightly excavated; lateral teeth large, the anterior 

 approximate. 



Porto St. Elena, and Salango, West Columbia. 



40. Tellina lacerxdens (pl.bri. f. 168 and 176. and pi. lxvi. 

 f. 258.) Hank//, Zool. Proc. 1844. 



T. testa oblongo-subtrigona, solida, opaca, subsequilaterali, niti- 

 dissima, convexiuscula, alba, (intus Candida,), superne laevigata, in- 

 ferne concentrice et confertim striata ; margine ventrali convexius- 

 culo; dorsali utrinque convexiusculo, et subasqualiter declivi; 

 extremitate antica rotundata (plerumque subattenuata), postica 

 rotundato-acuminata ; costa umbonah et flexui'a, ventrali inconspi- 

 cuis ; hgamento magno, elongato, prominente ; dentibus primariis 

 laceratis, antico lateral! subapproximato, postico laterah minore, 

 remoto. 



Var. Testa, magis trigona, undique sulcis confertis excavata. 



Oblong subtriangular, solid, subequilateral, of an extremely 

 glossy enamel-like opaque white surface, which is smooth near the 

 beaks, and grooved closely towards the but slightly convex ventral 

 margin ; dorsal line nearly equally sloping on each side, the edges 

 very slightly convex ; anterior extremity rounded (and in the typi- 

 cal examples rather attenuated), posterior end obtusely acuminated ; 

 fold and umbonal ridge obsolete; ligament large, elongated, and 

 prominent ; inside white ; the primary teeth minutely jagged, and 



