22 G PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 

 B. — Sulphur Bay, Clarion Island. 



3. Caranx ORTnociRAMMUS sp. iiov. (No. 28,345 U. S. Nat. Mns.) 



Allied to Caranx fcrdau and G. (jymnostethoides ; species with nearly 

 straight lateral line, mauy-ra.yed dorsal and anal, and feeble teeth. 



Body elliptical, compressed, the back regularly but not strongly arched, 

 the ventral outline forming a rather even but less convex curve. Head 

 l(Higer than deep, rather pointed in profile, its median ridge somewhat 

 elevated. Mouth low, oblique, the maxillary extending to nearly oppo- 

 site front of pupil, its length 2v|- in head; lower jaw slightly projecting. 



Teeth all equally minute, in villiform bands on jaws, vomer, palatines, 

 and tongue. Eye large, broader than prcorbital, its diameter 1^ in 

 length of snout, 4§ in head. Adipose eyelid little developed. Cheeks 

 and temporal region with tine scales; rest of head naked. 



Scales rather small, those below pectorals smaller; a naked area on 

 breast, becoming wider forwards from base of ventrals. Lateral line 

 almost straight, slightly undulated and curved upwards above pectorals, 

 becoming straight by almost imperceptible degrees opposite lobe of anal. 

 Greatest de])th of the arch less than diameter of pupil; the length of 

 straight part less than that of the curve. Plates developed only on the 

 ])OSterior third of the straight part; the plates small, with low keels, 

 their spines little prominent; 15 to 18 plates developed, including small 

 ones, in front of which are about 40 ordinary scales on the straight por- 

 tion of the lateral line. 



Spinous dorsal very small, of three weak spines slightly connected 

 by membrane, the highest spine not longer than diameter of pupil 

 (these spines, probably, more numerous and larger in young examples) 

 Soft dorsal long and low, with slender rays; a well-developed scaly 

 basal sheath anteriorly. Elevated rays in front a little more than one- 

 third the base of the flu, a little more than half length of head; anal 

 shorter than dorsal, its anterior lobe equally high, and with a similar 

 basal sheath. Eree anal spines obsolete iu typical specimen. Caudal 

 lobes moderate, equal, as long as head, their length equal to the depth 

 of the tin from tip to tip. Pectoral fln falcate, its tip very slender, 

 reaching eighth ray of anal, its length 2^ in body. Ventrals short, 2^ 

 in head. 



Head 2| in length to base of caudal ; depth 3|. 



Fin rays : D. IIl-I, 32. A. II-I, 20. 



Coloration in spirits, smutty olivaceous, everywhere irregularly 

 clouded with darker, the belly scarcely paler than the back ; opercular 

 sjiot obsolete. Dorsal, anal, posterior border of caudal, and tips of 

 ventrals blackish; flus otherwise dull olivaceous. 



A single specimen of this species, 10 inches in length, was obtained by 

 Lieutenant Nichols, at Sulphur Bay, Clarion Island, oft" the west coast 

 of Mexico. 



It is certainly very close to Caranx ferdau (Giinther, Eische Sudsee, 



