117 



Upper scar large, elongate, arched below ; lower scars 2, small, cir- 

 cular, far apart, the lower one considerably below the other. 



Hab. America, west coast. Panama ; on Pinna at low water. 

 Mus. Cuming, No. 2 ; three specimens. 



9. Anomia adamas. 



Red, thick, with numerous indistinct radiating ribs, most distinct on 

 the edge of the lamina ; internally red, pearly, with a small white disk. 



Upper muscular scar oblong, arched below ; lower scars subequal, 

 separate, but close together, and nearly on the same line. 



Hab. Galapagos ; Lord Hood's Island, attached to Avicula mar- 

 gariti/era at nine fathoms. Mus. Cuming, No. 5 ; three specimens. 



10. Anomia pacilus. 



Red, with distinct radiating ribs ; internally reddish pearly, with a 

 thick white disk. 



Upper muscular scar oblong, broad, lower edge arched ; lower 

 scars 2, rather smaller, nearly similar in size, rather close together 

 but separate, the hinder one rather lower than the other. 



Hab. Peru ; Tambaz ; dredged from five fathoms in soft mud. 

 Mus. Cuming, No. 9. 



11. Anomia larbas. 



Shell white, smooth, lower valve pale green. 



Upper muscular scar large ; lower scars 2, nearly as large as, and 

 close to, the upper one, nearly equal, and nearly ui a line. 

 Hab. Coast of Peru, Payta. Mus. Cuming. 



12. Anomia alectus. 



Irregular, upper valves convex, reddish, internally pearly ; lower 

 valve green, internally green. 



Upper scar large, oblong ; lower scars 2, large, rather smaller than 

 the upper one, close together, but not confluent ; the lowest one the 

 largest. 



Hab. Peru, Bay of Guayaquil ; Hinds. Mus. Brit., and Mus. Cu- 

 ming, No. 7. 



13. Anomia hamillus. 



Reddish, thin, sinuous. Dorsal valve with a triangular, white, 

 porcellauous disk. 



Upper scar large, roundish ; lower scars 2, separate, close together, 

 nearly equal-sized, small, and nearly on the same line. 



Hab. West Columbia, Bay of Canes. Mus. Cuming, No. 6. 



14. Anomia lampe. 



Shell yellowish green, radiately costated ; internally green. 



Upper muscular scar large, squareish ; lower two rather smaller, 

 subequal, near together and to the upper scar, and nearly on the same 

 line ; sinus in lower valve verj' large. 



Hab. California; Lady Katherine Wigram, Mus. Brit. Mus. Cu- 

 ming ; throe specimens. 



