CALYPTRJSA. Panama Shells. 221 



Habitat. Xipixapi and Salango ; Cuming ! Broderip : also 



Miiller. 



Panama ; C. B. A. ! 

 12 specimens were obtained. 



334. Calyptraea dentata. 



Synonymy. 



Calyptrcea rugosa Reeve (non Desh.) Conch. Syst. pi. 144. f. 1. 1842. 

 dentata Menke Zeitschr. Malak. p. 185. Dec. 1847. 



Station. Unknown. 



Habitat. Mazatlan ; Melchers ! Menke. 



Panama; C. B. A. ! 

 8 specimens were collected. 



335. Calyptraea hispida. 



Synonymy. 



Calyptrcea ( Calypeopsis) hispida Brod. in Proc. Zool. Soc. 



Lond. p. 37. May 1834. 



Brod. in Trans. Zool. Soc. Lond. 



I. 200. pi. 27. f. 10. 1835. 



Mull. Nov. Test. Viv. p. 144. May 1836. 



Lam. An. sans Vert. VII. 638, 



No. 36. (Desh. ed.) 1838. 



- Rev. Zool. Cuv. Soc. July 1838. 



Lam. An. sans Vert. Pt. 1. p. 233. 



No. 36. (Desh. ed. tert.) 1841. 



Chenu Lee. Elem. p. 144. f. 464. 1847. 



Our specimens vary much in form and in coloring. Some are 

 almost flat, but the cup is as deep in such as in the more coni- 

 cal shells : such specimens grow on a concave surface. One 

 shell, instead of having a subcircular outline, has the outline of 

 a very eccentric ellipse. The color of some is nearly white ; of 

 others, a deep brown; many are spotted and striped in the 

 manner described by Mr. Broderip. 



