251 



the lateral (which however are usually obsolete), short, tliick, aiid 

 nearly equidistant. 



The varieties in colouring are too numerous to specify, the prin- 

 cipal however, are are as follows ; violet, orange-red, white, yellow 

 or pinkish red, (either uniform, or rayed with purple, the white 

 specimens with usually two lateral crimson internal spots) ; whitish 

 or yellowish with narrow interrupted violet rays often assuming the 

 appearance of arrow-heads ; violet, rayed with wliite ; whitish, with 

 broad fawn-coloured and narrower purplish rays. 



Britain, and West Indies. 



53. Tellina Lucinoides (pi. Ivi. f. 32.) Eanlev, Zool. Proc. 

 1844. -^ 



T. testa suborbiculari, tenui, subsequilaterali, subventricosa, im- 

 polita, intus extusque alba, striis concentricis tenuissimis lineisque 

 radiantibus minutissimis obsolete decussata, utrinque rotundata; 

 margine ventrali arcuato ; dorsali utrinque convexiusculo et subse- 

 qualiter declivi ; latere antico paululum longiore ; flexura costaque 

 umbonaH obsoletis ; hgamento angustissimo, infosso ; dentibus la- 

 terahbus magnis, sequidistantibus. 



Suborbicular, thin, subequilateral, rather ventricose, duU, both 

 externally and internally wliite, with very dehcate concentric strise 

 and most minute radiating lineoles ; ventral margin strongly arcu- 

 ated ; extremities roimded ; dorsal edges nearly equally sloping and 

 sHghtly convex ; anterior side very slightly the longer ; umbonal 

 ridge and fold obsolete ; ligament very narrow, sunken ; lateral 

 teeth distinct, equidistant. 



Not unlike the sheU wliich is figured without a name in the 

 292nd plate (f, 8.) of the Encyclopedic Methodique. 



Chain Island, South Seas. 



54. Tellina NTJX (pi. Ivi. f. 33.) Ranley, Zool. Proc. 1844. 



T. testa obovaH, subinaequivalvi, subsequilaterah, tenui, convexa 

 aut subventricosa, nitida, sublsevigata aut inferne concentrice sub- 

 striata, intus extusque albida, umbonibus hyalinis et fulvis ; mar- 

 gine ventrali subarcuato ; dorsali utrinque convexo, satis et sequahter 

 declivi ; extremitate postica obtusa, attenuata ; ligamento angus- 

 tissimo, infosso ; natibus obtusis ; flexura distincta ; costa umbo- 

 nali subinconspicua ; dentibus lateralibus distinctis, antico paululum 

 propinquiore. 



Oboval, tliin, slightly inequivalve, abnost equilateral, from con- 

 vex to subventricose, rather glossy, wliitish both externally and 



