U.S.N. Astr! Exped 



PL, XL 



Dou^al 



Figs 1-4. PROCTOTRETUS TENUIS. Duiii & Bibr. Figs 5 - 12 . PROCTOTRETUS FEMORATUS , Grcl . 

 Fi'V 13-20 . PBOCiOTRETUS STANTONI , Grd . 



