249 



Bexure distinct ; inside yellowish white ; lateral teeth distinct and 

 nearly equidistant. 



Var. Eayed with orange-red and wliite ; beaks but slightly if at 

 all rosy. 



Isle of Negros, Philippines (Cuming). 



50. Tellina laevigata (pl.lxiv. f. 225, 227.) Lin. Sys. 1117 ; 

 Lin. Mus. Ulr. 480 ; Schroet. einl. t. 7. f. 10 ; List. t. 387. f. 234 ; 

 Lam. no. 36 ; Hani. Des. Cat. p. 68. 



T. testa ovato-rotundata, solida, subaequilaterali, nitida, convexa, 

 aut subventricosa, subltevigata j margine ventrali antice arcuato, 

 postice sursnm acclinato ; dorsali, antice subdechvi magis minusve 

 convcxo, postice declivi et superne subretuso aut subrecto et in- 

 terne convexo ; latere antico paululum longiore, rotundato, dila- 

 tato; postico magis minusve angulatoj natibus prominentibus ; 

 pube striis lamellosis rugosa, ; ligamento infosso ; flexura costaque 

 umbonali conspicuis ; cardine, dentibus lateralibus validis, subap- 

 proxiinatis, subrequidistantibus. 



Var. a. Subalbida, radiis roseo-aurantiis ornata. Var. b. (T. 

 concinna, Phil. Ab. und Bes. Conch, part. 5. t. 5. f. 1.) Albida, 

 marginibus intus extusque rubro-aurantiis. 



Rounded-ovate, solid, subequilateral, glossy, convex or subven- 

 tricose, nearly smooth (there are obsolete crowded radiating hnes, 

 and frequently but not always minute very close raised concentric 

 striula; towards the lower margin and at either extremity) ; ventral 

 edge arcuated in front, greatly rising behind ; anterior side rather 

 the longer, rounded and dilated, its dorsal edge more or less con- 

 vex and not much sloping ; posterior side more or less angulated, 

 its dorsal edge sloping and nearly straight or slightly refuse above, 

 but convex at its termination ; beaks prominent ; Hgament sunken ; 

 fold and llexure conspicuous ; lateral teeth strong, subapproximate, 

 subequidistant. 



Var. a. Wliitish, or flesh-coloured with rosy orange rays. Var. 

 b. Wliite with the edges alone of a bright orange red, and the 

 umbones and interior usually tinged with yellow. 



An extremely variable species, with the beaks usually worn at 

 the touching point. 



St. Thomas, West Indies. 



51. Telljna semen (pi. lvi. f. 8,) llanley, Zool. Proc. 1844. 



T. testa ovali, crassa, inajquilaterali, subventricosa, nitida, albida 

 (intus submargaritacea), antice rotundata, postice obtusa; concen- 

 trice striata, striis antice subimbricatis confertissimisque, postice 



