247 



ciiis; ligamento iniiiimo, infosso; supcrficie interna polita; don- 

 tibus lateralibus distinctis, suba])proxiiiiatis, sub?e({ui(listantibiis. 



Small, ovate, subtrigonal, nearly equilateral but i-ather longer 

 posteriorly, rather ventricose in front but compressed at tlie pos- 

 terior end, tolerably tliick, of a very glossy pure uniform \\'hite, 

 with scarcely impressed concentric strise ; the ventral edge bidging 

 out towards the rounder anterior extremity, but rising in rather a 

 concave line towards the posterior end, which is strongly beaked 

 and has the tips rounded but much attenuated ; front dorsal edge 

 convex and strongly sloping, ligamental edge elongated, nearly 

 straight and strongly sloping ; beaks prominent ; umbonal ridge 

 and fold not conspicuous ; ligament sunken and minute ; inside 

 polished, the lateral teeth distinct and nearly equally subap- 

 proximate. 



Catbalonga, Isle of Samar. 



47. Tellina Sowerbii (pi. Ixiii. f. 205.) Emiley, Zool. Proc. 



1844. 



T. testa subeUiptica, subsequivalvi, tenui, compressa, Isevigata, 

 polita, Candida; margine ventraH arcuato, postice sursmn accli- 

 nato; dorsali antice vix paululum declivi, convexiusculo, postice 

 paululum declivi et prope nates subincurvato, deinde convexo; 

 latere autico longiore, subproducto ; postico rotundato-acuminato ; 

 ligamento parvo, angustissimo, infosso ; tlexura ventrali costaque 

 umbonali subinconspicuis ; superficie interna albida, plerumque 

 aurantio tincta ; dentibus lateralibus tenuibus, subeequidistantibus. 



Nearly eUiptical, subinequivalve, compressed, higlily pohshed, 

 of an uniform smooth wliite (in some specimens with a tinge of 

 rosy orange which increases in intensity towards the beaks) ; ven- 

 tral edge arcuated, and rising at the posterior extremity ; anterior 

 side decidedly the longer, its extremity rounded, its dorsal edge 

 nearly horizontal; posterior side attenuated, but rounded at its 

 termination, its dorsal edge a httle sloping at first, slightly incurved 

 near the beaks, and then decidedly convex ; ligament sunken, and 

 very narrow ; inside usually tinged with orange ; lateral teeth tliin, 

 and nearly equidistant. 



Australia. 



48. Tellina lata (pi, Ixiv, f. 237.) Qiioy et Gai. Astrol. 

 Zool. vol. 3. p. 497. t. 81. f. 8, 9, 10 ; Lam. 2nd. ed. vol. 6. p. 108 ; 

 Hani. Des. Cat. p. 71. sup. 1. 14. f. 13. 



T. testa subovali, insequilaterali, solida, subsequivalvi, compres- 

 siuscula, nitida, alba, sublsevigata, rubro eleganter radiata; radiis 



p 2 



