247 



cuis ; ligamento minimo, infosso ; superficic interna polita ; den- 

 tibus lateralibus distinctis, sut)approximatis, subseciuidistantibus. 



Small, ovate, subtrigonal, nearly equilateral but rather longc^r 

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

 terior end, tolerably thick, of a very glossy pure uniform white, 

 with scarcely impressed concentric strise ; the ventral edge bulgmg 

 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 

 pohshed, the lateral teeth distinct and nearly equally subap- 

 proximate. 



Catbalonga, Isle of Samar. 



47. Tellina Sowerbii (pi. bdii. f. 205.) Hanley, Zool. Proc. 

 1844. 



T. testa subelliptica, subsequivalvi, tenui, compressa, laevigata, 

 poKta, Candida; margine ventrali arcuato, postice sursum accli- 

 nato ; dorsali antice vix paululum declivi, convexiusculo, postice 

 paululum declivi et prope nates subincurvato, deinde convexo; 

 latere antico longiore, subproducto ; postico rotundato-acuminato ; 

 ligamento parvo, angustissimo, infosso ; flexuia ventrali costaque 

 umbonali subinconspicuis ; superficie interna albida, plerumque 

 aurantio tincta; dentibus lateralibus tenuibus, subseqmdistantibus. 



Nearly elliptical, subinequivalve, compressed, higUy polished, 

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

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

 triil edge arcuated, and rising at the posterior extremity ; antenor 

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

 nearly horizontal; posterior side attenuated, but rounded at its 

 termination, its dorsal edge a little sloping at first, shghtly incurved 

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

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

 and nearly equidistant. 



Australia. 



48. Tellina lata (pi. Ixiv. f. 237.) Quoij 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. t. 14. f. 13. 



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

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



p 2 





