243 



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

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

 Tumbez and Panama (Cuming). 



39. Tellina prora (pi. Ix. f.l52.) Hanlei/, Zool.Vvoc.l'^^^. 



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

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

 trice et tenuissime striata; margine ventrali convexo; dorsali 

 utrinque valde et subsequaliter decKvi, subrecto ; extremitate pos- 

 tica acuminata ; flexura ventrali costaque umbonaK subobsoletis ; 

 ligamento prominulo; dentibus lateralibus magnis, antico ap- 

 proximato. 



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

 lateral, uuilbrm pink both witliin 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 laceridens (pl.lxi. f.l68 and 176. and pi. Ixvi. 

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



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

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

 ferue concentrice et confertim striata ; margine ventraH convexius- 

 culo; dorsali utrinque convexiusculo, et subaequaliter decHvi; 

 extremitate antica rotundata (plerumque subattenuata), postica 

 rotundato-acuminata ; costa umbonaH et flexura ventrali inconspi- 

 cuis ; ligamento magno, elongato, prominente ; dentibus primariis 

 laceratis, antico laterah subapproximato, postico lateraH minore, 

 remoto. 



Var. Testa magis trigona, undique sulcis confertis excavata. 



Oblong subtriangular, sohd, subequilateral, of an extremely 

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

 beaks, and grooved closely towards the but slightly convex ventral 

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

 very sHghtly convex ; anterior extremity rounded (and in the t>^i- 

 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 



