432 PROCEEDINGS OF THE ACADEMY OF 



Seas. No individuals from the United States are in the collection of the 

 Smithsonian Institution. It has only heen noticed on our coast as a straggler 

 to New York. 



Genus TRACHUROPS Gill. 



Trachprops crumenofhthalmus Gill. 



Scomber crnmenophthalmus Block. 



" balantiophthalmus Bloch, Schneider. 



" plumieri Bloch. 

 Caranx crumenophthalmus Lacipede. 



" daubentonii Lacfpede. 



" plumieri Cuv. et Val. 



" macrophthalmus Agassiz. 



A single specimen of this species was found at Beesley's Point, New Jersey, 

 among a school of blue fish (Pomatomus saltatrix), by Prof. Baird. 



The specific name and the reference of the African and American forms to 

 one species is given solely on the authority of Giinther, no specimens of the 

 foreign forms being at present accessible to me. The Pacific representative or 

 Red Sea representative appears to be distinguished by its more slender body 

 and shorter head. 



Genus PARATRACTUS Gill. 



This genus embraces three of the species known which have been referred 

 to Caranx. Besides the type, the Caranx fusus, of Geoffrey,* and the Trachu- 

 rtis boops, of Girard,f belong to it. 



Paratractus pisquetus Gill. 



Caranx pisquetos Cuv. et Val. 



" chrysos Dekay (nee Scomber chrysos, Mit.) 

 " hippos Holbroolc (nee Scomber hippos, Linn,) 

 Trachurus squamosus Gronov., post. 

 Carangus chrysos Girard. 

 " hippos Gill. 



This species was first considered by Dekay to be identical with the Scomber 

 chrysos, of Mitchill, whose specific name was consequently adopted. He has 

 been followed in this identification by all subsequent writers. Such an iden- 

 tification is evidently erroneous, as Mitchill expressly describes his species as 

 having the "length six inches and a half; depth two." The height is there- 

 fore contained three times and a sixth (3) in the length, J proportions which 

 are fully corroborated by the figure. It is probable that authors have been 

 misled by the radial formula of Mitchill, which gives a larger number of rays 

 than is usually found in the species to which it really belongs. 



Holbrook has also identified this species with the Scomber hippos, of Lin- 

 naeus. This reference is likewise evidently erroneous, as Linnaeus espe- 

 cially attributes two larger teeth in the front of the jaw, while in the present 

 species such teeth are not developed. 



The name given by Cuvier and Valenciennes being the first properly appli- 

 cable to the species, it must be adopted. 



* Geoffroy St. Hilaire, in Description de Egypte; Histoire Naturelle, pi. 24, fig. 3, 



f 1809 13.) 

 t Girard, Surveys and Explorations for a Railroad Route to the Pacific, vol. x. Fishes, 



p 108(1859.) 



t The heighth of Caranx pisquetus is contained 3? 3! times in the length; this spe- 

 cies is, therefore, much more slender than Mitchill's fish. 



2 Holbrook erroneously considers the present species to be also identical with the 

 Caranx chrysos of Cuvier and Valenciennes. 



[Sept. 



