230 



Oval or oblong-oval, solid, convex, glossy, white or yellowish, 

 with narrow pink or rosy rays (which often become obsolete,) and 

 concentric sulci, which, subimbricated in front, are almost lamel- 

 lar towards the decidedly shorter posterior side, where in one 

 valve they almost always become obsolete; dorsal slopes rather 

 gentle ; ventral edge convex ; posterior extremity attenuated and 

 angulated ; umbonal ridge distinct ; inside whitish or tinged with 

 yellow, beaks tinged with rose-colour; lateral teeth strong and 

 nearly equidistant. 



Yar. a, with two short rays at the beak in each valve, forming a 

 small crimson cross ; a smooth posterior area in one valve, Yar. h, 

 beaks with a very large crimson cross ; no rays ; sulci finer ; area 

 as in last. Yar. c, rays distinct ; no smooth area. Yar. d, As last, 

 but perfectly wliite, and oval-oblong. 



T. scalaris is but an abbreviated variety of tliis very variable 

 species, with the posterior side more strongly biangulated and less 

 attenuated at the extremity. The typical specimen of the Trench 

 Museum is yellow, (externally very pale) with the apical cross of a 

 rich red and very small. 



Pliilippines &c., very common. 



16. Tellina Guildingii (pi. Ivi. f. 1.) Kanley, Zool. Proc. 

 1844. 



T. testa oblonga, tenui, compressa, subsequilaterali, albida, radiis 

 aurantio-roseis zonisque albido-roseis ornata; sulcis exihbus con- 

 fertis concentrice exarata; margine veutrali subrecto, medio sub- 

 retuso ; dorsali utrinque declivi, et vix convexiusculo ; latere postico 

 paululum breviore, attenuato ; extremitate postica inferne angulata, 

 antica rotundata ; natibus acutis ; costa umbonah et flexura ven- 

 trali inconspicuis ; hgamento prominente ; dentibus lateralibus mag- 

 nis, sequidistantibus. 



Oblong, tliin, compressed, subequilateral, whitish, vidth narrow 

 roseate fiesh-coloured rays, and fine close-set concentric sulci ; ven- 

 tral edge nearly straight, rather retuse in the middle ; dorsal margin 

 scarcely at all convex or sloping on either side; posterior side 

 very slightly the shorter, attenuated, its extremity angulated below 

 (biangulated in the young, and the hgamental edge retuse) ; ante- 

 rior end rounded ; umbonal ridge obsolete ; flexure inconspicuous ; 

 ligament prominent ; inside pale ; lateral teeth large, and equi- 

 distant. 



West Indies. 



17. Tellina pulchella (pi. Ivi. f. 4.) Zfi'w., no. 23; Hani. 

 Des. Cat. p. 64. sup. 1. 1. f. 4 ; Philip. En. Mol. Sicil. vol. i. p. 24. 



