304 



TRANSACTIONS OF THE AMERICAN PHILOSOPHICAL SOCIETY 



only a few contrast with those of the Scombridae, especially the following: opisthotic never 

 as much interposed between the exoccipital and pterotic as it is in the Scombridae; eye 

 with bony sclerotic case less well developed than in most of the Scombridae; premaxillae 

 usually protractile. All the other skull characters listed (on pp. 30, 31) are either fully 

 shared by the Scombridae or are differences of degree only. Starks (1909, p. 573) notes 



Selene vomer 



Fig. 181. Selene vomer (k) . Fomer setipinnis (B). 



