22 BULLETIN OF THE 



Triforis (bigemma var. 1) hircus DaU. 

 Triforis abrupta DaU. 

 Triforis torticula Dall. 

 Triforis inflata Watson. 

 Triforis inflata var. ibex Dall. 

 Triforis inflata var. Jilata Dall. 

 Triforis cylindrella Dall. 



Family CERITHIOPSID^. 



Genus SEILA A. Adams. 

 Sella terebralis C. B. Adams.* 



Genus CERITHIOPSIS Forbes & Hanlet. 

 Section EUMETA Morch. 

 Cerithiopsis subulata Montagu. 



Section CERITHIOPSIS s. s. 



Cerithiopsis crystallina Dall. 

 Cerithiopsis Sigsbeana Dall. 

 Cerithiopsis matara Dall. 

 Cerithiopsis Martensii Dall. 

 Cerithiopsis acontium Dall. 



Section METAXIA Monterosato. 



Cerithiopsis metaxae Delia Chiaje. 

 Cerithiopsis metaxae var. iceniolata DalL* 

 Cerithiopsis abrupta Watson. 



Family CERITHIID^. 



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.* 



