[69] CATALOGUE OF THE FISHES OF NORTH AMERICA. 



241. -SARD A Cuvler. (21G) 



771. Sarda sarda Bloch. Eu. N. (.674) 



772. Sarda chilensis Cuv. & Val. C. P. (075) 



242.— ORCYNUS Cuvier. (217) 



773. Orcynus alalonga Giiiclin. En. S. C. O. ((576) 



774. Orcyuus thynnus Liniiicus. Eii.S. N. O. (677) 



243.— EUTHYNNUS Liitkeu. (218) 



775. Euthynnus alliteratus RatuM'.s(|ne. S. W. En. (678) 



776. Euthynnus pelamys Linutens. Wn.S. O. (67U) 



Family LXXXY.— CARANG1DJ3.1 (76) 

 244.— DECAPTERUS Bleeker. (220) 



777. Decapterus punctatus Agassiz. S. W. (682) 



> The following analysis of genera of Carangida may be substituted for that given 

 in the synopsis : 

 a. Premaxillaries protractile. 



i. Pectoral fins long, falcate ; anal similar to soft dorsal, its base longer than ah- 

 domeu ; maxillary with a supplemental bone. {Carangince.) 

 c. Dorsal outline more strongly curved than ventral outline. 

 d. Dorsal and anal each wit h a single detached tiulet ; body slender . Dec.\pteru8. 

 dd. Dorsal and anal without fiulets. 



e. Lateral line with well-developed scutes for its entire length ; borty elon- 

 gate Trachcrus. 



ee. Lateral line with scutes on its straight posterior portion only (these some- 

 times very few and .small, especially in those species with 

 the body much compressed). 

 /. Shoulder girdle with a deep cross-furrow at its junction with the 

 isthmus, above which is a fleshy projection ; body elon- 

 gate Trachurops. 



ff. Shoulder girdle normal ; its surface even ; body deeper. 



g. Body oblong or more or less elevated, not as below Caranx. 



gg. Body broad-ovate, very strongly compressed, its outlines everywhere 

 trenchant, the anterior profile nearly vertical ; scutes al- 

 most obsolete Vomer. 



eee. Lateral line without any scutes; body short and elevated, strongly com- 

 pressed Selene. 



CO. Dorsal outline less strongly curved than ventral; body much compressed, ita 

 outlines everywhere trenchant ; armature of lateral line obsolete or nearly so. 



C B LOROSCOM BR US. 



&&. Pectoral fin short, not falcate. 



li. Maxillary without supplemental bone ; anal fin similar to soft dorsal, 

 its base much longer than abdomen ; tail unarmed. 

 {Trachynotirice.) 



d. Forehead convex ; teeth small or deciduous Trachyxotus. 



hh. Maxillary with a distinct supplemental bone ; anal fin shorter than 

 soft dorsal, its base not longer than abdomen. (Seriolinw.) 

 i. Dorsal spines low and Aveak ; pectoral fins short. 

 j. Dorsal and anal tins without finlets. 



k. Membrane of dorsal spines disappearing with age.NAUCRATES. 



kk. Membrane of dorsal spines persistent Seriola. 



jj. Dorsal and anal fins each with a detached two-rayed finlet. 



Elagatis. 



ii. Dorsal spines strong, ending in very long filaments ; pectoral fins 



elongate Nematistius. 



