22 BULLETIN OF THE 



Triforis (bigemma var. 1) hircus Dall. 

 Triforis abrupta Dall. 

 Triforis torticula Dall. 

 Triforis inflata Watson. 

 Triforis inflata var. ibex Dall. 

 Triforis inflata var. filata Dall. 

 Triforis cylindrella Dall. 



Family CERITHIOPSID.&. 



Genus SEILA A. Adams. 

 Seila terebralis C. B. Adams.* 



Genus CERITHIOPSIS Forbes & Hanley. 

 Section EUMETA Morch. 

 Cerithiopsis subulata Montagu. 



Section CERITHIOPSIS s. s. 



Cerithiopsis crystallina Dall. 

 Cerithiopsis Sigsbeana Dall. 

 Cerithiopsis ma tar a Dall. 

 Cerithiopsis Martensii Dall. 

 Cerithiopsis acontium Dall. 



Section METAXIA Monterosato. 



Cerithiopsis metaxee Delia Chiaje. 

 Cerithiopsis metaxce var. tceniolata Dall.* 

 Cerithiopsis abrupta Watson. 



Family CERITHIID^E. 



Genus BITTIUM Leach. 

 Bittium alternatum Say. 



Section DIASTOMA Deshayes. 

 Bittium varium Pfeiffer.* 



Genus ALABA A. Adams. 



Alaba tervaricosa C. B. Adams.* 

 Alaba Adamsii Dall.* 

 Alaba cerithidioides Dall.* 



