1897.] NATURAL SCIENCES OF PHILADELPHIA. 103 



63. Trachinotus glaucus (Bloch). 



Chatodon glaucus Bloch, Ichthyologia, pi. 210, 1787 (Martinique). 

 Trachinotus glaucus, Jordan & Evermann, Fishes of North America, 940. 



64. Trachinotus rhomboides (Bloch). 



Chcetodon rhomboides Bloch, pi. 209, 1787 (Martinique). 



This West Indian species is apparently different from the north- 

 ern Trachinotus falcatus with which it has been confounded. In 

 specimens of the same size the vertical fins are much higher in the 

 West Indian species. 



Head 3£ ; depth If in length ; eye 3£ in head ; dorsal VI-I, 20 ; 

 anal II-I, 18. 



Back much elevated, but not angulated at origin of soft dorsal ; 

 end of snout not vertical, curved ; head slightly concave at occiput. 

 Maxillary to below anterior margin of pupil ; eye on level of lower 

 edge of premaxillary and axil of pectoral. Origin of soft dorsal 

 behind tip of pectoral, its lobe much elongated, extending to middle 

 of caudal ; lobe of anal reaching to below Uase of caudal ; caudal 

 lobes equal, 2 J in body; pectoral rounded, H in head; ventrals 

 2| in head. Scales minute, large posteriorly near lateral line. Pale 

 olive above, becoming silvery on belly, lobes of vertical fins dusky. 



65. Trachinotus carolinus (Linnaeus). Cobbler Fish. 



Gasterosteus carolinus Linnaeus, Syst. Nat., Ed. XII, 490, 1766 (Carolina). 

 Trachinotus carolinus, Jordan & Evermann, Fishes of North America, 944. 



RACHYCENTRIDJE. 



66. Kachycentron canadum (Linnaeus). Cobio. 



Gasterosteus canadus Linnaeus, Syst. Nat., Ed. XII, 491, 1866, Canada. 

 Rachycentron canadum, Jordan & Evermann, Fishes of North America, 948. 



STROMATEIDJE. 



67. Rhombus paru (Linnosus). Poppy Fish. 



Stromateus paiu Linnaeus, Syst. Nat., Ed. X, 248, 1758 (Jamaica, based on 

 Sloane). 



Rhombus paru, Jordan & Evermann, Fishes of North America, 965. 



The specimens here noted have been compared with specimens 

 found in the Washington market, with which they agree in all re- 

 spects except in depth. The southern specimens have the depth of 

 If, the northern If. If the two are really different, as is probable, 

 the northern species will stand as Rhombus alepidotus. 



CENTROPOMIDJE. 



68. Centropomus undecimalis (Bloch). Sea Snook. 



Scicena undecimalis Bloch, Ichthyol., VI, 60, pi. 303, 1792. 

 Centropomus undecimalis, Jordan & Evermann, Fishes of North America, 

 1,118. 



