MUSEUM OF COMPARATIVE ZOOLOGY. 21 



Family CYPRJEID^. 



Genus CYPR^EA Linne. 

 Cyprsea cinerea Gmelin. 



Genus TRIVIA Gray. 



Trivia pediculus Linne.* 



Trivia suffusa Gray. 



Trivia subrostrata Gray. 



Trivia nivea Gray. 



Trivia candidula Gaskoin. 



Trivia globosa Gray. 



Trivia quadripunctata Gray var. rotunda Kiener. 



Genus ERATO Risso. 

 Erato Maugeriae Gray.* 



Family TRIFORIDjE. 

 Genus TRIFORIS Deshayes. 



Section TRIFORIS 8. s. 

 Triforia lilacina Dall.* 



Section MASTONIA Hinds. 



(Subsection A, apex acute.) 

 Triforis perversa Linne var. nigrocindum Adams. 

 Triforis decorata Adams var. olivacea Dall.* 



(Subsection B, apex mammillary.) 

 Triforis turristhomae Orbigny. 



Section INELLA Bayle. 

 Triforis longissima Dall. 

 Triforis triserialis Dall. 

 Triforis triserialis var. aspera Jeffreys.* 

 Triforis triserialis var. intermedia Dall. 

 Triforis sarissa Dall. 

 Triforis colon Dall. 

 Triforis Rushii Dall* 



Section SYCHAR Hinds. 

 Triforis samanae Dall.* 

 Triforis bigemma Watson. 



