Bui U S. B F. 1906 



Plate IV. 



1-2. Scalpettum hatmiense. Type, side and carina] views 

 3. ScalpeUum pacijicum. Detail of structure at base of rnrina. 

 I. ScalpeUum paciflcum. Type, 

 5. Dichelaspie hawaiensU. Type. 

 c. PacUasma beUum, Type. 



7. Atepas rex, Type. 



8. \lepas percarlnata, Cotypes. 



9-10. I'rmira iwloltfra, Tvpe. Top and carino-rostral views. 



