80 



more oblique, and cover a greater proportion of the valve than 

 T. lauta. 



Tellina exculta. T. transversa, solida, trigono-elliptica, 

 tumida, nitida, albida, rosaceo vix radiata, concentrice liris tenu- 

 ibus et radiatim striis tenuissimis insculpta ; liris in valva dextra 

 postice lamellosis et interruptis, squamas simulantibus ; in valva? 

 sinistra? disco valde obliquis; umbonibus postmedianis ; latere 

 anticali semi-elliptica ; latere posticali subtriangulari, ad apicem 

 valde truncato; flexura insigni, haud lamellosa : cavositas flava ; 

 dentibus valvae dextrae conspicuis. Long. 2 ; alt. 1 ; lat. ^ poll. 

 Hab. Feejee Islands. 



Looks like a variety of T. rastellum, Hanley, ( T. Philippii, 

 Anton,) but is proportionally shorter, the beaks are farther back, 

 and the disc is more tumid anteriorly. The lamina? of the right 

 valve are everywhere more delicate, and nearly absent on the 

 anterior half; the scales are confined to the valley in front of the 

 fold. The oblique grooving on the left valve is very decided. 



Tellina concentrica. T. transversa, ovato-trigona, tenuis, 

 convexiuscula, albida, haud nitida, ubique concentrice lamellosa, 

 et radiatim inter lamellas subtilissime striata ; lamellis sequalibus, 

 acutis, confertis, reflexis; umbonibus vix post-medianis : pars 

 antica semi-elliptica; margine dorsali vix declivi: pars postica 

 sub-triangularis ; margine dorsali valde declivi, sub-arcuato, 

 valde excavato, ad apicem truncato ; flexura conspicua, haud 

 lamellosa : intus alba. Long. 1| ; alt. 1^ ; lat. £ poll. Hab. 

 Feejee Islands. 



Like T. capsoides, Lam., but less triangular, the anterior por- 

 tion more tumid, and its dorsal slope arcuate ; the flexure is 

 more decided ; the concentric laminae decided and uniform 

 throughout ; the radiating striae are very delicate, and found 

 equally before and behind, not crossing the concentric laminae. 

 It is much like T. prist is, Lam., except in form, and its anterior 

 margin, which is represented as serrated. 



Tellina perula. T. parvula, solidiuscula, ventricosa, rotun- 

 dato-triangularis, eburnea, concentrice et remote striatula ; um- 

 bonibus tumidis,submedianis, radiis binis lacteis ornatis ; margin- 

 ibus dorsalibus valde declivibus ; latere antico rotundato, tumido ; 



