380 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.10 



PLATE 3G 



Figures 90-9,''), Phragiuatopoma altcnuata: V'vj,. 90, anterior end, from 

 right side, showing high, conical operculum; Fig 91, outer oper- 

 cular palea with appendage, seen from the top; Fig. 92, same, 

 from side, sho\ving normal position of appendage; Fig. 93, middle 

 opercular palea from dorsal end of series; Fig. 94, same, from 

 ventral end of series; Fig. 95, inner opercular palea (figs. 91- 

 95 from same individual, to same magnification) ; Fig. 96, distal 

 end of outer opercular palea, showing major tooth on one side, 

 enlarged. 



