MODIOLA. Panama Shells. 251 



Panama ; C. B. A. ! 

 Only 1 specimen was found. 



396. Pinna tuberculosa. 



/Synonymy. 



Pinna tuberculosa Sowb. in Proc. Zool. Soc. Lond. p. 84. June 1835. 



- Hanley Desc. Catal. p. 255. 1845 ? 



Station. Muddy banks ; Cuming ! Sowerby. 



We found it in crevices of rocks, near low water mark. 



Habitat. Panama; Cuming! Sowerby. 



Panama ; Hanley. 



Panama ; C. B. A. ! 

 4 specimens were found on the reef. 



397. MytilllS . Sp. indet. a. 



Station. Unknown. 



Habitat. Panama; C. B. A.! 

 1 specimen was obtained. 



398. LithodoinilS . Sp. indet. a. 



Station. In thick shells, between half tide and low water 

 mark. 



Habitat. Panama ; C. B. A. ! 



20 specimens were collected on the reef, 



399. IVIodiola semifusca? 



Synonymy. 



Modiola semifusca (?) Lam. An. sans Vert. No. 11. 1820. 



Sowb. Gen. pi. . f. 6. 1824. 



- (?) Lam. An. sans Vert. VII. 22. No. 11. 



(Desk ed.) 1836. 



Mytilus Guiaensis Kiist. (an Lam. ?) Conch. Cab. pi. 1. f. 7. 1840. 



