249 



ilexurc distinct; inside ycUowisli white; lateral teeth distinct and 

 nearly equidistant. 



Var. Eaycd \Aith orange-red and wliite ; beaks but slightly if at 

 all rosy. 



Isle of Negros, Pliilippiiies (Cuming). 



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

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

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



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

 ant subventricosa, sublsevigata ; margine ventrali _ anticp arcuato, 

 postice sursum acclinato ; dorsali, antice subdeclivi magis miimsve 

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

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

 tato; postico magis minusve angulato; natibus prominentibus ; 

 pube striis lamellosis rugosa ; ligamento infosso ; flexura costfique 

 umbonali conspicuis ; cardiue, dentibus lateralibus vahdis, subap- 

 proximatis, subsequidistantibus. 



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

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

 margiuibus intus extusque rubro-am"antiis. 



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

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

 and frequently but not always minute very close raised concentric 

 striulffi 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 ; ligament sunken ; 

 fold and flexure conspicuous ; lateral teeth strong, subapproximate, 

 subequidistant. 



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

 h. 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. Tellina SEMEN (pi. Ivi.f. 8,) Hanlei/, Zool. Proc. 1844. 



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

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

 trice striata, striis antice subimbricatis confertissimisque, postice 



