galeommidte. 479 



the animal, however, induce us to regard it as most nearly 

 allied to Lejrton. 



Species of Tellimya. 



bidentata, Mont. ferruginosa, Mont. 



Fam. GALEOMMIDiE. 



Animal oval. Mouth with large lips, and developed 

 labial palps. Mantle very large, double-margined, tuber- 

 culiferous, closed in front; siphonal openings posterior, 

 two ; two pairs of branchial leaflets. Foot long, ligulate, 

 byssiferous, perforate, projecting from an anterior opening 

 of the mantle. 



Genus GAXEOMMA, Turton. 



Shell thin, transversely oval, equivalve, sub-equilateral, 

 gaping widely in front; surface of valves longitudinally 

 striated and decussated ; beaks minute, acute. Cartilage- 

 pits under the beaks, small ; no hinge-teeth ; ligament 

 internal. Pallial impression simple. 



Syn. Parthenope, Scacchi. Hiatella, Costa, not Daud. 

 or Brown. 



Ex. G. Turtoni, Sowerby, pi. 115, fig. 3. Shell, G. 

 Turtoni, fig. 3, a, 3, b. 



The mantle in Galeomma is extended beyond the edges of 

 the shell, and the margins are furnished with ocelli or tuber- 

 cles. The foot is byssiferous, and the animal, generally, 

 has resemblances to that of the Arciihe. 



Species of Galeomma. 



ambigua, Desk. argentea, Desk. 



angusta, Desk. aurantia, Law. 



