288 



Var. (T. exigua, Toli. Test. Sicil. 1. t. 15. f. 15, 17.) testa ab- 

 breviata et idcirco margine clorsali utrinque magis declivi ; flexura 

 omnino obsoleta. 



Oval, tliinnish, compressed, extremely glossy, subequilateral, 

 smooth both witliin and without, of an orange, wliite, orange-red, 

 yellow or rose colour ; the ventral edge convex in front, straightish 

 and ascending beliind ; anterior side rather the longer, rounded, its 

 dorsal edge moderately sloping; posterior extremity obtusely an- 

 gulated ; hgamental edge sloping, at fu'st retuse, then rather con- 

 vex ; ligament prominent ; fold and flexure not quite obsolete ; la- 

 teral tooth very small, approximate. 



Var. Shortened, the dorsal edges consequently more sloping ; the 

 flexure quite obsolete. 



Britain, Europe. 



I agree with Dr. Philippi, in regarding the T. hyal'ma of 

 Deshayes (Exped, Morea, 1. 18. f. 12, 13, 14.), as a narrow variety 

 of this very variable shell. 



125. Tellina juvenilis (pi. Ivii. f. 63.) Hanley, Zool. Proc. 

 1844. 



T. testa ovata, subtrigona, tenui, pellucida. compressiuscula, 

 nitida, rubro-aurantia, laevigata, insequilaterali ; margine ventrali 

 convexo aut convexiusculo ; dorsali antice subrecto et dechvi, 

 postice convexo et valde declivi; latere antico longiore, subat- 

 tenuato, rotundato ; postico brevi, et obtuse subcuneiformi ; flexura 

 costaque umbonah subobsoletis ; ligamento satis conspicuo ; dente 

 laterali parvo. 



Subtriangularly ovate, inequilateral, tliin, pellucid, slightly com- 

 pressed, smooth, glossy, orange-red ; ventral margin more or less 

 convex ; anterior side the narrower, rounded at the extremity, its 

 dorsal edge nearly straight ; posterior extremity short, and obtusely 

 wedge-shaped, the ligamental edge being convex and abruptly 

 sloping ; ligament distinct ; fold and flexure almost entirely obso- 

 lete ; lateral tooth small. 



Pliihppines. 



126. Tellina lux (pi. Ivii.f. 71.) Hanle?/, Zool. Proc. 1844. 



T. testa subovali, tenui, pellucida, compressa, nitida, aurantia, 

 sublsevigata, inaequilaterali; margine ventraH convexiusculo ; dorsali 

 utrinque subdeclivi, antice convexiusculo, postice brevi et incur- 

 vato ; latere postico breviore, obtusissime biangulato ; extremitate 

 antica obtuse rotundata ; flexura costaque umbonali obsoletis ; liga- 

 mento prominente ; dente laterali approximato, distincto. 



