38 



sparsd, subdinphami , sulturbinatd , orhiculatd, complanatd : diam. 

 ■S-, nit. I poll. 

 Hah. ad Insulam Muerte. 



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

 — W. J. B. 



Calyptr^a MAMiLLARis. Col. testd albidd, subconicd ; apice sub- 

 purpureo, mamillare : diam. -^, alt. -^y poll. 



Hab. ad Insulam Muerte. 



This pretty species varies. It is sometimes milk white, with the 

 mamillary apex of a brownish purple, and with the inside sometimes 

 of that colour, sometimes white, and sometimes yellowish. In other 

 individuals the white is mottled with purplish brown stripes and spots. 



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

 — W. J. B. 



Calyptrjea STRIATA. Cal. tcstd sordid^ albd, suborbiculafd, subco- 

 nicd, subturbinatd, striis longitxuUnalibus elcvatis creberrimis cor- 

 rugatd ; intilsfusco-Jlavescente: diam. -\q-, alt. ^\r polL 



Hab. ad Valparaiso. 



Found on shells in sandy mud, at a depth of from forty-five to sixty 

 fathoms. 



Calyptr^a conica. Cul. testd conicd, fused albido maeulatd, sub- 

 turbinatd : diam. \^, alt. -fyy poll, 

 Hab. ad Xipixapi et ad Salango. 

 Found attached to shells in deep water. 



Subgenus Cri-.pipatklla, Less. 

 Lamina, rotundatd, apice laterali et subterminali. 

 Calyptr^a foliacka. Cal. testd suborbicnlari, albidd, foUaced ; 



intils castaned vel albd eastaneo varid : diam. 1 , alt. i poll. 

 Hab. ad Aricam Peruviae, saxis adhaerens. 



This Crepipatella, which bears no remote resemblance to the upper 

 valve of some of the Chamce when viewed from above, was found on 

 exposed rocks near the shore. — W. J. B. 



Calyptr^a dorsata. Cal. testd svbalbidd, planittsculd, eostis longi- 

 tudinalibus irregularibus rugosd ; intus medio fitsco-violaced : 

 diam. i, lat.^ poll, 

 Hab. ad Sanctam Elenam. 



The back of this shell is not unlike the upper valve of some of the 

 Terebratulee. 



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

 W. J. B. 



Calyptr^a dilatata, Lam., varietas intus nigro-castanea. Cal. 

 testd sordid^ albd eastaneo strigatd ; intils nitide nigro- castaned ; 

 lamindalbd: diam. \-^,lal. \^, alt. -i^ poll. 

 Hab. ad Valparaiso. 



This highly coloured variety was found on exposed rocks at low 

 water. The pure white of the plate shows to great advantage, lying 

 above the rich back ground of the interior of the shell. In some in- 

 dividuals this internal colour is all but black. — W. J. B. 



