CREPIDULA. Panama Shells. 225 



341. Calyptraea umbrella. 



Synonymy. 



Calyptrcea umbrella Desb. in Encyc. Metli. Vers. II. 173. 



(1st ser. pag.) 1830. 



rudis Brod. in Proc. Zool. Soc. Lond. p. 35. May 1834. 



Brod. in Trans. Zool. Soc. Loud. I. 196. 



pi. 27. f. 1. 1835. 



- umbrella Lara. An. sans Vert. VII. 635. No. 30. 



Desh. ed. 1838. 



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



No. 30. (Desh. ed. tert.) 1841. 



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



(Crucibuhim) rudis Woodward Manual Moll. 



p. 152. pi. 11. f. 12. 1851. 



/Station. Under stones ; Cuming ! Broderip. 



Habitat. Panama and Real Llejos : Curaiug ! Broderip : also 

 Rev. Zool. 



Seas of Central America ; Deshayes. 



West America ; Woodward. 



Guayaquil ; Jay. 



Panama ; C. B. A. ! 

 Only 1 specimen was found. 



342. Calyptrsea imguis ! ! 



We found one immature specimen which may belong to this 

 species. 



343. Crepiclula 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 

 marginal, a little dextrorsal : septum slightly angulated along 



