UNIVALVES. 529 



Coquille a ous^erture entiere , ^lohiileuse ; 



sbmniet onihiliquc. 



" "•'-Tnr'iT"-i i "'T'n'^'"-"-"'^-''-"^'-^'~^^'''~^^"^'" ■■" ' ""■ ^'-'■TT ' 11^ " nfl-Tr i rrT i agm ^g 





