48 OSTEOLOGY OF SCOMBR01D FISHES 



MATERIAL. 

 This paper is based upon the following genera and species: 



Oligoplites. 



A specimen of 0. mundus, 18 inches in length, and a cranium of 

 the same species of a specimen 9 inches in length; both from Panama. 



Scomberoides. 



A specimen of 8. toloparah, 12 inches in length, from the Philip- 

 pine Islands. 



Elagatis. 



A head and shoulder-girdle of a specimen of E. bipinnulatus, 31 

 inches in length, from the Galapogos Islands. 



Naucrates. 



A specimen of N. ductor, 9y 2 inches in length, from Japan. 



Seriola. 



A cranium and shoulder-girdle of S. dorsalis, of a specimen 3 or 

 4 feet in length, from San Diego ; the cranium 5y 2 inches long; the 

 vertebral characters described from an alcoholic specimen of S. zonata, 

 opened along the vertebral column. 



Decapterus. 



A specimen of D. punctatus, 17 inches in length, from Florida. 



Trachurops. 



A specimen of T. crumenophthalmus, 10 inches in length, from 

 Cuba. 



Trachurus. 



A specimen of T. mediterraneus, 15 inches in length, from the 

 Canary Islands. 



Caranx. 



A specimen of C. chrysos, 14 inches in length, from Cuba, and one 

 of C. hippos, 29 inches in length, from the Pacific Coast of Mexico. 



Megalaspis. 



A specimen of M. cordyla, 15 inches in length, from Formosa. 



Gnathanodon. 



Two specimens of G. speciosus, 20 and 25 inches in length, from 

 the Pacific Coast of Central America. 



