ORfittDuiA. Pdmtm' Shklls. ^^5 



841. CalJ^ptt'sea' Itu^brella. 



Synonymy. 

 Calyplrcea umbrella D«sh. in Encyc. M«th. Vers. II. 173. 



(1st ser. pag.) .... iggg. 



rudis Brod. in Proc. Zool. Sooi Lond. p. 36. Mfty 1834. 



Brod. in Trans. Zool. Soc. Lond. 1. 1 96. 



pi. 27.f. 1. - - - - . 1835. 

 ' - umhtella Lam.Aii.sansVert; VlI.''d36.No. 30. 



Desh. ed. - - - - - . ■ Iggs. 

 • Lam. An. sans Vert. III. Pt. 1. p. 234. 



No.'301(Deshi'k:tert.) - - 1841. 



• rudis Rev. Zool. Cuv. Soc. July 1838. 



(CrttctJuZttw) rwrfw Woodward Manual Moll. 



p. 162. pi. 11. f. 12. - 1851. 



Station. — Under stones ; Cuming I Broderip. 



Habitat. — Panama and Eeal Llejos : Omning I Broderip : also 

 Eev. Zool. 



Seas of Central America ; Deshayes. 



West' Anierica ; Woodward. 



Guayaquil; Jay. 



Panama ;' t). B. A. I 

 t)nly 1 specimen was found. 



342. Calyptraea nngruis ? ? 



We found one immature specimen which may belong to this 

 species. 



343. Crepidula cerithicola. Nov. sp. 



Shell ovate, convex : posteriorly whitish, sometimes with a 

 broad ray of dark brownish red on each side of the umbo ; 

 anteriorly subtransparent, pale brownish red, with narrow dark 

 rays of the same color ; sometimes all the rays are confluent, 

 and more rarely the entire shell is of a dark brownish red ; 

 with the septum white : smooth : apex acute, terminal and 

 iflftrginal, a little dextrorsal : septum slightly angulated along 



JULY, 1853. 57 Ann. Lto. Nat. Hht. 



