215 



lucid, nearly smooth, glossy, white, the beaks rayed with rose- 

 colour, the extremities of the sides pink ; ventral edge subarcuated, 

 ascending posteriorly ; anterior side very slightly the longer, its 

 dorsal edge scarcely sloping; posterior edge attenuated and some- 

 what beaked, its dorsal side convex and moderately sloping ; the 

 flexure and umbonal ridge very conspicuous ; umbones tumid ; liga- 

 ment sunken ; inside whitish, a ligamental callus, and rather small 

 and nearly equidistant lateral teeth. 

 Tonga. 



43. Tellina elegans (pi. lxv. f. 241.) Gray in Wood's Ind. 

 Test. sup. 1. 1. f. 5 ; Hani. Des. Cat. p. 62. 1. 1. f. 5. 



T. testa, oblongo-elongata, valde tortuosa, subinsequivalvi, sub- 

 requilaterali, solida, polita, subventricosa, laevigata; nivea, (intus 

 albida) roseo radiata, rachis latis versus marginem ventralem 

 arcuatum et postice acclinatum evanescentibus ; margine dorsab 

 antice convexiusculo et vix declivi, postice leviter declivi et prope 

 nates roseas subincurvato delude convexo ; latere postico paululujn 

 longiore, attenuato, leviter subrostrato ; extremitate postica rotun- 

 dato-angulata ; ligamento brevi, pergrandi, prominente ; costa, um- 

 bonab obsoletissiina ; dentibus parvis, antico subapproximato. 



Twisted, elongated-oblong, solid, rather inequi valve, subequi- 

 lateral, subventricose, smooth, highly pobshed, white with broail 

 rosy rays, which disappear towards the arcuated and posteriorly 

 ascending ventral margin ; extremity of the anterior side rounded, 

 its dorsal edge but slightly sloping; posterior side very slightly 

 the longer, attenuated, obtuse at the extremity ; umbonal ridge 

 quite obsolete ; ligament peculiarly large, short, and prominent ; 

 inside white, the lateral teeth small and rather approximate. 



Gulf of Mexico. 



44. Tellina radiata (pi. Ixiii. f. 220, 221.) Lin. Syst. 1117 ; 

 Lam. no. 1 ; Chem. 6. f. 102; Wood, Gen. Con. t. 38. f. 2, 3 ; 

 Ency. Met. t. 289. f. 2, 3 ; Hani. Des. Cat. p. 61. t.4. f.26 ; Knorr. 

 vol. iv. t. 2. f. 2, 4 ; T. unimacukta, Lam. no. 2. 



T. testa oblongo-elongata, subinsequilatcrali, baud tortuosa, sub- 

 ventricosa, sohda, lfevi, polita, alba, (intus flavescente) radiis roseis 

 latis plerumque ornata ; margine ventrali vix convexiusculo ; dor- 

 sali antice vix declivi, postice subrecto et leviter declivi ; extremi- 

 tate lateris antici longioris rotuudata, lateris postici subattenuata, 

 obtuse angulata ; ligamento brevi, magno, prominente ; costa, 

 umbonali obsoleta; flexura ventrali conspicua; lunula distincta, 

 angusto-lanceolata; dentibus lateralibus valitlis, subaeqnidistantibuS. 



p 



