22 



UNITED STATES AND MEXICAN BOUNDARY 



The color of the dorsal region is purplish blue, a tint probably altered by the alcohol; the 

 sides of the head and flanks being silvery. A black spot may be observed upon the peduncle of 

 the tail near the insertion of the caudal fin. The fins themselves are of a uniform light olive. 



Plate XI, fig. 6, represents Chloroscombrus caribbaeus, size of life. 



List of specimens. 



Catal. 



No. 



No. of 

 Spec. 



Age. 



Locality. 



When 



collected. 



Whence obtained. 



Nature of 

 Specimen. 



Collected by — 



714 



' 3 



St. Joseph's Island, Texas. . . 



1853 





Alcoholic. 











DOLIODON, 



Gir ar d. 







Gen. Char.— Head small; snout bluntly rounded with the mouth situated beneath it. Mouth small; velvet-like teeth upon 

 the jaws and front of the vomer; none on the palatines and tongue. Body rather short, minutely scaly; lateral line unarmed. 

 Dorsal and anal spines united together by a membrane and contiguous to the soft and articulated portion of these fins. 



We are at a loss to account for the fact of Dr. Holbrook identifying the species upon which 

 this genus is founded^ with Trachinotus pampanus, Cuv. & Val., and which is the type of his 

 genus Bothrolaemus, characterized by the total absence of teeth. 



The Zeus spinosus of Mitchill belongs to this genus of which it will constitute the second 

 species. 



DOLIODON CAKOLINUS, Grd. 



Plate XI, Fig. 4. 



Spec . Char. — Body sub-illipsoid, rather short, deep, compressed. Head contained four times and a half in the total length. 

 Snout thick, blunt, and rounded. Mouth moderate, slightly protractile, placed beneath the snout, with its gape nearly hori- 

 zontal, the upper jaw alone forming a slight arch over tire lower one, which" is the shortest The posterior extremity of the 

 maxillary extending to a vertical line drawn across the posterior rim of the pupil. The eye is well developed and circular; its 

 diameter entering about three times and a half in the length of the side of the head. Pectorals and ventrals of moderate 

 development ; ventrals somewhat smaller than the pectorals, and inserted upon a vertical line drawn posteriorly to the base of 

 the latter. 



Syn.— IAcMu Carolina, DeKay, N. Y. Fauna, IV, 1842, 114, pi. x, fig. 3.— Storer, Synops. 1846, 96.— Bd. in Ninth Ann. 



Rep. Smiths. Instit. (1854) 1855, 345. 



The scales are very minute, inconspicuous ; the lateral line, slightly arched upon its anterior 

 half, is nearly straight posteriorly, undergoing slight undulations. 



Br.V: V; D VII, 24 ; A III, 22 ; 7,1,8,8,1,6; V I, 5 ; P 1, 18. 



The upper regions are bluish purple ; the inferior regions appearing as though washed with gold 



and silver. The upper portion of the second dorsal is blackish ; the rest of the fins being 

 light olive. 



Plate XI, fig- 4, represents a small specimen of Doliodon carolinus, size of life. 



List of specimens. 



Catal. No. of 



No. 



spec 



713 



When collected. Whence obtained. 



St. Joseph's Island, Texas .. . . 



1853 



G. Wurdemann . . 



Nature of 

 specimen. 



Collected by 



Alcoholic . . 



G. Wurdemann .. 



