280 



T. testa parv^, ovata^ insequilaterali, tenuiuscula, convexa^ niti- 

 da, intus extusque aurantio-rosea, laevigata; margine ventrali 

 antice arcuato, postice sursuin accKvi; dorsali antice magis mi- 

 nusve convexo satisque declivi ; latere antico producto, ad extre- 

 mitatem obtuse rotundato ; postico acuminato ; natibus acutis ; 

 ligamento vix prominulo ; costa umbonali fere et flexm-a ventrali 

 omnino obsoletis ; dente laterali parvo, approximate. 



Small^ ovate, inequilateral, tliinnish, tolerably convex, both ex- 

 ternally and internally of a rosy-orange, nearly smooth, in young 

 specimens there are indications of concentric striae near the arcu- 

 ated front of the ventral edge, which latter ascending posteriorly 

 in nearly a straight line, acuminates the short anterior side at its 

 junction with the straight and much sloping ligamental margin ; 

 front dorsal edge always convex and not greatly sloping, extremity 

 obtusely rounded; ligament scarcely prominent; ventral flexure 

 entirely obsolete, umbonal ridge nearly so ; beaks acute ; lateral 

 tooth small, approximate. 



Mindanao, Philippines. 



108. Tellina Corbuloides (pi. Ivii, f. 50, 57.) Hanley, 

 Zool.Proc.1844. 



T. testa subovali, insequivahni, solida, subventricosa, sublsevi- 

 gata, roseo-incarnata, epidermide tenuissima et opah coloribus 

 nitente induta ; margine ventrali sinistrse valvulae ultra marginem 

 convexiusculum alterius prominente ; margine dorsali antice con- 

 vexiusculo et dechvi, postice subrecto et valde declivi ; latere an- 

 tico breviore, obtuse acuminato; extremitate postica rotundata; 

 ligamento prominulo; area dorsali postica in adultis planidata; 

 natibus obtusis ; flexura ventrali distincta ; superficie interna ple- 

 rumque aurantio-rubra ; dente laterali parvo, approximate. 



Yar. h. Oblonga ; margine ventrali subrecto ; flexura obsoleta. 

 Var. c. Extus intusque Candida. 



Suboval, inequivalve, solid, nearly smooth, more or less ventri- 

 cose, covered when fresh with a very tliin opalescent epidermis, 

 under wliicli the shell is dull, and of a rosy flesh colour ; ventral 

 edge moderately convex and in the left valve projecting beyond 

 that of the right ; anterior side shorter, and obtusely acuminated, 

 its dorsal edge nearly or quite straight and much sloping ; hinder 

 side rounded, its dorsal edge convex and moderately sloping ; 

 hinder dorsal area flattened in the adult; beaks obtuse; ventral 

 flexure distinct ; inside usually orange-red ; a single small approx- 

 imate lateral tooth. 



