

ICHTHYOLOGY. 



21 









species in order to ascertain whether better groups could not be formed, based chiefly upon that 



character. 



CHORINEMUS LANCEOLATUS, Grd . 



Plate XI, Fig. 5. 



Spec. Char.— Body elongated, very much compresssed and quite tapering from the origin of the second dorsal and anal to 

 the peduncle of the tail. Head constituting about the fifth of the total length ; snout elongated and sub-conical ; gape of the 

 mouth obJique ; jaws sub-equal, lower one longest; posterior extremity of the maxillary extending to a vertical line drawn 

 midway between the pupil and the posterior rim of the orbit. Patches of slender and acute teeth on the vomer, palatines, and 

 tongue ; a double row of them on either jaws. Eye well developed and circular; its diameter entering three times and a half 

 in the length of the side of the head : exactly once in advance of its anterior rim. Pectorals and ventrals of moderate devel. 

 opment ; ventrals inserted opposite the base of the pectorals. 



The surface of the body presents the aspect of minute longitudinal wrinkles into which small, 

 elongated scales are imbedded. The lateral line, from the scapular region slightly ascends to 

 nearly opposite the origin of the first dorsal fin, hence descending in slight undulations until 

 on the middle of the flank, then straight to the base of the caudal fin. 



Br. VIII : VIII; D V, 21; A II, 21; C 8, 1, 8, 8, 1, 8; V 6 ; P 1, 15. 



The dorsal region is bluish; the sides of the head and- body being silvery, and the fins unicolor. 



Plate XI, fig. 5, represents Chorinemus lanceolatus , size of life. It is proper to remark that 

 the interraclial membrane in the second dorsal and anal fins is much less developed than 

 represented on the figure ; thus giving the rays a greater freeness. 



List of specimens. 



Catal. No. of Atre. 



No. 



710 



Spec 



1 



Locality. 



When 

 collected. 



"Whence obtained. 



Nature of 

 Specimen. 



Collected by- 



St. Joseph's Island, Texas 



1853 



G. Wurdemann Alcoholic. ! G. Wurdeinann 



CHLOROSCOMBRUS. Girard. 



Gen. Char. — Elongated and narrow patches of velvet-like teeth on the jaws, vomer, and palatine bones ; tongue smooth ; 

 mouth rather small and slightly protractile, its gape being oblique and the tip of the lower jaw projecting in front of the upper; 

 body rather short and deep, scaly; lateral line unarmed, that is, not shielded; pectoral fins falciform; two small spinet in 

 advance of the anal fin. Ventrals very small. A small horizontal spine, directed forwards, in advance of the first dorsal. 



Were it not for the unarmed lateral line, the species upon which the present genus is founded 

 would readily be taken for a Caranx. 



To this genus belongs Seriola cosmopolita, Cuv. & Val. and which is closely allied to the fol- 

 lowing one. 



CHLOROSCOMBRUS CARIBBAEUS, Grd. 



Plate XI, Fig. 6. 



Spec. Char. — Body deep and rather short, very much compressed, with the ventral outline more convex than the back, which 

 on a profile view constitutes a very depressed curve. Peduncle of tail exiguous ; caudal rin deeply furcated. Head forming a 

 little more than the fifth of the length. The snout is short, slightly protractile ; the mouth being rather small, its gape very 

 oblique, and the lower jaw projecting somewhat beyond the upper. The posterior extremity of the maxillary extends to a vertical 

 line drawn across the anterior rim of the orbit. The eye is well developed, sub-circular, its diameter ente ing about three times 

 in the length of the side of the head. Pectorals well developed and falciform ; ventrals very small, inserted upon a vertical 

 line drawn immediately behind the base of the pectorals. 



The body is covered with small and inconspicuous scales, the lateral line forming anteriorly an 

 arc of a circle, being straight along the flank to the base of the caudal, where it is provided with 

 more conspicuous scales. 



Br. VII: VII: D VIII: 29: A II, 29; C 6; 1, 7, 7, I, 6; V 6: P i, 16. 



