224 Panama Shells. 



Calyptrcea radiata Brod. in Trans. Zool. Soc. Lond. I. 



p. 198. pi. 27. f. 6. - 1835. 



Mull. Synop. Nov. Test. Viv. p. 143. May 1836. 



Lam. An. sans Vert. VII. 635. No. 



31. (Desh. ed.) 1838. 



Rev. Zool. Guv. Soc. July 1838. 



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



No. 31. (Desh. ed. tert.) 1841. 



Chenu Lee. Elem. p. 144. f. 460, 461. - 1847. 



Station. Sandy mud on dead shells at a depth of 7 to 14 

 fathoms; Cuming! Broderip. 



Habitat. Bay of Caraccas ; Cuming ! Broderip : also Rev. 



Zool. : also Miiller. 

 Seas of South America ; Deshayes. 

 Bay of Caraccas ; Jay. 

 Panama ; C. B. A. ! 



10 specimens were collected. 



340. Calyptraea (Syphopatella) regularity Nov. sp. 



Shell with a circular margin, regularly conic : moderately 

 thickened: snow white, tinged with brown about the apex: 

 with very fine lightly impressed striae of growth, somewhat 

 shining : apex subacute, subcentral : lamina folded so as to 

 form a tube about one-third of its own width, produced to the 

 margin so as to make one complete revolution : margin acute. 



Diameter 1.27 inch ; height .55 inch. 



Station. Unknown. 



Habitat. Mazatlan ; Lt. Green ! Mus. Essex Inst. : also 



Gould MSS. 

 Panama ; C. B. A. ! 



3 specimens were obtained. 



