300 



150. Tellina umbonella (pi. lvi. f. 13.) Lamarck, no. 48. 

 Haul. Des. cat. p. 70. 



T. testa obovali, solidiuscida, subinsequilaterah, convexa aut 

 convexiuscula, subimpolita, extus intusque albida, umbonibus hya- 

 linis et roseo tinctis, epiderraide tenui fugaci cinerascente induta, 

 laevigata ; margine ventrali convexo aut subarcuato ; dorsali 

 utrinque subrecto et paulo declivi ; latere antico paulo longiore, 

 rotundato ; postico subangulato ; natibus haud promfnentibus ; 

 ligamento infosso ; costa umbonali obsoleta, ; dentibus minimis. 



Oboval, tolerably strong, slightly inequilateral, merely convex, not 

 glossy, both within and without whitish under a thin ashy epider- 

 mis, with the beaks somewhat hyaline and tinged with rose-colour, 

 smooth or with a few antiquated lines ; ventral edge decidedly con- 

 vex ; the dorsal edges but little sloping, and nearly straight ; an- 

 terior side rather the longer, rounded at its extremity ; posterior 

 side subangulated ; Hgament sunken ; beaks not prominent ; urn- 

 bonal ridge obsolete ; teeth minute. 



Very like Plebeia in all but the shape, which is much more 

 elongated in that species. 



Port Lincoln, Australia. 



151. Tellina nobilis (pl.lx. f. 143.) Han ley, Zool.Troc. 1844. 



T. testa ovaH, solidiuscula, convexa, insequilaterali, nitidissima, 

 intus extusque rosea, laevigata ; margine. ventrali convexiusculo 

 medio plerumque subrecto ; dorsali antice convexiusculo et vix 

 declivi, postice subdeclivi et subrecto aut convexiuscido ; latere 

 antico longiore, ad extremitatem obtuse rotundato ; postico obtuse 

 angulato ; natibus obtusis ; flexura costaque umbonali subobsoletis ; 

 ligamento prominulo ; dentibus parvis. 



Oval, tolerably strong, convex, inequilateral, very glossy, smooth, 

 rosy within and without ; ventral edge moderately convex ; dorsal 

 tolerably convex and scarcely sloping in front, moderately sloping 

 and varying from straightness to slight convexity behind ; ante- 

 rior side the longer, obtusely rounded at its extremity ; posterior 

 side obtusely angulated; fold and flexure nearly obsolete; liga- 

 ment rather prominent ; beaks obtuse ; teeth small. 



Luzon, Pliilippines. 



152. Tellina luceena (pi. lviii. f. 98.) Hanley, Zool. Proc. 

 1844. 



T. testa oblonga, solidiuscula, subventricosa, nitidiuscula, laevi- 

 gata, albida, umbonibus aurantiis, antice longiore et rotundata, 

 postice obtuse cuneiformi , margine ventrali subrecto ; dorsali pos- 



