280 



T. test& parva, ovata, inaequilaterali^ tenuiuscula, convexa, niti- 

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

 antice arcuato, postice sursiun acclivi; dorsali antice magis mi- 

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

 mitatem obtuse rotiindato ; postico acuminato ; natibus acutis ; 

 ligamento vix prominulo ; costa umbonali fere et flexura ventrali 

 omnino obsoletis ; dente lateral! parvo, approximato. 



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, wliich latter ascending posteriorly 

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

 junction with the straight and much sloping hgamental 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, PliiHppines. 



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

 ZoohProc.1844. 



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

 gata, roseo-incarnata, epidermide tenuissima et opah coloribus 

 nitente induta ; margine ventrali sinistrge valvulse 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; 

 hgamento prominulo; area dorsali postica in adultis planulata; 

 natibus obtusis ; flexura ventrali distincta ; superficie interna ple- 

 rumque aurantio-rubra ; dente laterali parvo, approximato. 



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

 Var. c. Extus intusque Candida. 



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

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

 under which 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. 



