CEPHALOPODS OF THE PHILIPPINE ISLANDS 125 



is a weU-developed swimming membrane or keel on the aboral surface 

 occupymg the distal half of the club. 



The buccal membrane has seven lappets and seven supports The 

 supports are fastened as foUows: the dorsal one to the dorsal surface 



Figure 27.-<2-f, Calliteuthis meleagroteuthis Chun: a, dorsal view, female, mantle length 

 65.U mm.; ^, ventral v,ew of same; c, left tentacular club; d, Onychoteuthis banksi (Leach), 

 dorsal view of female, mantle length 60.0 mm. 



