GREGORY: FISH SKULLS 



345 



bar formed by the iunction of the postorbital part of the frontal (/2) with the lateral 



"'Tn ngure 225, the left side of the same skull, we see the blir.d side, with the secondary 



K.r (m The remaining elements of the skull are readily identifiable. 



bar (/2j. 1 he remaining n^.^.u^ u^ve been derived from symmetrical deep-bodied 



pfipareth 



Hippoglosaus hippoglossus 



F.c 225 Hippoglossus. Blind side showing secondary- union of prefrontal and frontal (fr'). 



