322 



more elevated than the arcuated and moderately sloping anterior ; 

 front extremity broad and rounded, hinder one obtuse ; ligament 

 sunken ; fold and flexure obsolete ; beaks prominent and incHning 

 forward ; teeth extremely large. 



Isle of Panay, Philippines (Cuming). 



195. Tellina ai.ta (pi. Ixii. f. 200.) Conrad, Jour. Ac. N. S. 

 Pliilad. vol. vii. p. 258; Hani. Des. Cat. p. 71. 



T. testa obovali, subventricosa, crassiuscula, subinsequilaterali, 

 impolita, concentrice et confertim rugosa, extus intusque albida; 

 margine ventrali subrecto ; dorsali utrinque paululum declivi, an- 

 tice convexo, postice recto; latere antico longiore, rotundato; 

 extremitate postica obtuse biangulata ; costa mnbonali lata, planu- 

 lata; natibus recte incurvatis ; hgamento infosso; dentibus an- 

 gustis. 



Oboval, shghtly ventricose, thickish, slightly inequilateral, duU 

 white, with crowded concentric wrinkles ; ventral edge straightish ; 

 dorsal little sloping on either side, convex in front, rectilinear be- 

 hind ; anterior side rather the longer, rounded at its extremity ; 

 posterior side obtusely biangidated; umbonal ridge broad but 

 flattened ; beaks directly incurved ; ligament sunken ; inside white j 

 the teeth narrow ; the liinge margin broad. 



California. 



196. Tellina ephippium (pi. Ixv. f. 244.) Sjjeitgler, loc. cit. 



T. testa Lacunosa simillima, sed valde insequivalvi et plane 

 insequilaterali ; costa umbonali angustissima, carinata. 



Closely resembling Lacnnosa, but decidedly inequivalve and in- 

 equilateral ; the umbonal ridge narrow and carinated in the flatter 

 valve, replaced by a hnear indentation in the other. 



East Indies (Spengler). 



197. Tellina lacunosa (pi. kv. f, 252.) Chem., vol. iv. 

 p. 92. f. 78 ; Lam. no. 39 ; Enc. Meth. t. 290. f. 14 ; Hani. Des. 

 Cat. p. 69. t. 3. f. 12 ; T. papyracea, Gmel. 



T, testa obovali, ventricosa, subinsequivalvi, subsequilaterali, 

 tenuiuscula, subpellucida, extus intusque Candida, sublajvigata, 

 medio contorto-lacmiosa ; margine ventrali subrecto sed contorto ; 

 dorsali antico subarcuato ; Hgamentali subdeclivi, subrecto ; latere 

 antico lato, rotundato ; postico lato, obtuso ; natibus prominenti- 

 bus, incurvatis; ligamento subinfosso; costa mnbonali lata, ob- 

 tusa. 



