Ii7 



Calyptr^a HisPiDA. Cal. testa subovatd, suhconicd, albd strigis 

 maculisque subpurpureo-fuscis vctrid, slriis frequentibus et spinis 

 tubular ibus erectishispidd; limbo crenulato ; apice turhinato ; cya- 

 tho suhdepresso : diam. !*, lat. -i\, alt.-,^„ poll. 

 Hab. ad Insulam Mueite. (Bay of Guayaquil.) 

 This elegant species, the circumference of whose somewhat de- 

 pressed cup is free, with the exception of one part where it adheres 

 laterally, was found on dead shells, in sandy mud, at a depth of twelve 

 fathoms.— W. J. B. 



Calyptr ea maculata. Cal. testd ovatd, albidd purpureo-fusco ma- 

 culald, longiiudlnaliter rugosd ; limbo serrato ; apice subturbi- 

 nato, subincurvo : diam. i-^, lat. tV. oH- v poll- 



Hab. ad Insulam Muerte. 



The external contour of this shell, more especially in the position 

 of the subturbinated apex, much resembles that of Ancylus. The cir- 

 cumference of the cup is free, excepting at one point, where it adheres 

 laterally throughout its length. 



Found in sandy mud, on dead shells, at a depth of eleven fathoms. 

 _W. J. B. 



Calyptk^a serrata. Cal. testd suborbiculari, albd subpurpureo 

 vel fiisco interdum fucatd vet strigatd, costis longitudinalibus 

 prominentibus rugosls ; limbo serrato ; apice subturbinato ; cyatho 

 valde depresso : diam. ^, lat. -iV> «'<• tV poll. 



Hab. ad Real Llejos et Muerte. 



Var. testa alba. 



Found on dead shells, in a muddy bottom, at the depth of from six 

 to eleven fathoms. — W. J. B. 



Subgenus Syphopatella, Less.? 

 Laming interna subtrigona, subcirculari, latere dextro replicato. 



Calyptr^a sordida. Cal. testd subconicd, sordide luted, longitudi- 

 nalite.r subradiatd ; apice turbinato ; cyatho depresso, subtrigono, 

 haud profunda : diam. i^, lat. tV> oH' tV poll. 

 Hab. ad Panamam. 



This species, the inside and outside of which are of a sordid yellow, 

 is generally covered externally with coral or other marine adhesions. 

 The plate is spoon-shaped. 



Found on stones, on a sandy bottom, at depth of twelve fathoms. — 

 W. J. B. 



Calyptr^a Unguis. Cal. testd tenui, corded, corrugatd, fused; 

 apice subturbinato ; cyatho depresso, subtrigono ; diam. -,V, alt. -it. 

 poll. 

 Hab. ad Valparaiso. 



The plate is spoon-shaped, but not so shallow as that of Cal. 

 sordida. 



Found on shells, at a depth of from seven to fortv-five fathoms. — 

 W. J. B. 



CALYPTRiEA LiciiEN. Cat. lestd albidd, interdum pallide fusco 



