UNIVALVES. 477 



^ammm MiMM i iMwaiMaajj a nu a ugm** ! — m ja ggiaacigsjaa ffltiajiiiM i. iMiMjx-'jwjiiiiuau i iii ijjumgmniivt. a « r . y \ in • - j.tm ri 



Coquille a spire rdgufiere , obtuse ; homhee y 

 base echancree. 



