315 



bonali conspicuis ; ligamento magno et satis prominente ; super- 

 ficic interna Candida ; dcntibus satis magnis. 



Ovate-oblong, solid, inequilateral, convex, dull, whitish, usually 

 covered by an ashy epidermis, nearly smooth, ilexuous ; ventral 

 margin convex at the sides, but retuse in the middle ; anterior side 

 rounded, its dorsal edge convex and but little sloping ; posterior 

 side wedge-shaped, its extremity nearly biungulated, its dorsal 

 margin elongated sloping and nearly straight; fold and flexure 

 conspicuous ; ligament tolerably large and prominent ; beaks ob- 

 tuse ; no lunule ; inside white, the teeth of a moderate size. 



California. 



-- 183. Tellina edentula (pi. Ixv. f. 243.) Brocl. and Sow., 

 Zool, Jour. vol. iv. p. 363 ; Zool. to Beech. Voy. t. 41. f. 5. and 

 t. 44. f. 6 ; Haid. Des. Cat. p. 71. 



T. testa obovali-subtrigona, solidiuscula, subventricosa, subim- 

 pohta, subinsequilaterali, sordide albida, sublsevigata ; margine 

 ventraH convexiusculo ; dorsali utrinque subdeclivi, antice con- 

 vexo, postice subrecto ; latere antico paulo longiore, rotundato ; 

 postico obtuse subangulato; flexura costaque umbonali subobso- 

 letis ; ligamento magno, prominente ; dentibus minimis, sublamel- 

 losis. 



Var. Abbreviata et magis infequilaterali. 



Oboval, subtriangular, tolerably strong, more or less ventricose, 

 of a rather dull dirty white, nearly smooth, more or less inequila- 

 teral ; ventral edge moderately convex ; dorsal not greatly sloping 

 on either side, convex in front, straightish and rather short be- 

 liind ; anterior side the longer, rounded at its extremity ; posterior 

 side obtusely subangulated ; fold and flexure rather obsolete ; hga- 

 ment large and prominent; inside white; teeth very small, and 

 usually sublamellar. 



Var. Shorter and more inequilateral. 



Behring's Straits. 



- 184. Tellina inornata (pi. lix. f. 123.) Eanlei/, Zool. Proc. 

 1844. ^^i ^H . 



T. testa ovato-oblonga, subtenui, subventricosa, impolita, sub- 

 sequilaterali, sordide albida, epidermide tenui et cinereu induta, 

 laevigata ; marginis ventralis parte media recta aut subretusa ; dor- 

 sabs parte antica convexiuscula et paididum dccHvi, parte postica 

 subdecliW ; extremitate antica rotundata, postica attenuato-rotun- 

 data ; flexura costaque umbonah obsoletis. 



Ovate-oblong, rather thin, subventricose, and nearly equilateral. 



