300 



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

 Hani. Des. cat. p. 70. 



T. testa obovali, solidiuscula, siibinseqiiilaterali, convexa aut 

 convexiusciila_, siibimpolita, extus intusque albida^ umbonibus liya- 

 linis et roseo tiiictis^ epiderinide tenui fugaci cinerascente induta, 

 laevigata ; margine ventrali convexo aut subarcuato ; dorsaii 

 utrinque subrecto et paiilo declivi ; latere antico paulo longiore^ 

 rotuiidato ; postico subangulato ; natibus baud prominentibus ; 

 ligamento infosso ; costa umbonali obsoleta ; deutibus minimis. 



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

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

 mis, with the beaks somewhat hyaline and tinged wdth 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 ; ligament sunken ; beaks not prominent ; um- 

 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.) Z?a^%,Zool.Proc. 1844. 



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

 intus extusque rosea, la3vigata ; margine ventrali convexiusculo 

 medio plerumque subrecto ; dorsaii antice convexiusculo et vix 

 declivi, postice subdeclivi et subrecto aut convexiusculo; latere 

 antico longiore, ad extremitatem obtuse rotundato ; postico obtuse 

 angulato ; natibus obtusis ; flexura costaque umbonali subobsoletis ; 

 ligamento prominulo ; deutibus 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 lucerna (pi. Iviii. f. 98.) Hanleij, Zool. Proc. 

 1844. 



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

 gata, all)ida, umbonibus aurantiis, antice longiore et rotundata, 

 j)ostice obtuse cuneiformi , margine ventrali subrecto ; dorsaii pos- 



