72 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Gill-opcning extending forward opposite front margin of orbit. Rakers 

 9 + 21. Filaments about half of orbit. Pseud obranchia? shorter than 

 filaments. Entire bases of rayed dorsal and anal scaly. Straight 

 portion of lateral line beginning a little behind origin of soft dorsal. 

 Soft dorsal inserted much nearer tip of mandible than base of caudal, 

 and soft anal similarly inserted. No trenchant bony keel in front of 

 spinous anal. Caudal rather large. Anus just before tip of ventrals. 

 In alcohol spinous dorsal brown above. Anal whitish like ventrals. 

 An indistinct diffuse grayish-dusky blotch on opcrcle above. Iris dull 

 brassy. 



One example from Rio Janeiro, Brazil, S inches long. 



Subgenus SELAR Bleeker. 

 Nat. Tijds. Ned. Ind., I, 1850 (ISol), pp. 343, 3.52 (boops). 

 Caranx megalaspis (Bleeker). 



Selar megalaspis Bleeker, 1. c, V, 1853, p. 502. Priaman, in mari. (M. 



Godin.) 

 Cara7ix viegalaspis Fowler, Journ. Acad. Nat. 8ci. Pliila., XII (2), 1904, 

 p. 510, PI. 13, upper figure. 



Head 3|; depth 2f; D. VIII-I, 25; A. II-I, 20; P. ii, 19; V. I, 5; 

 scales in lateral line about 30, its remaining portion composed of about 

 40 large scutes; about 10 scales between origin of dorsal and upper 

 part of lateral line, and nearly 30 between latter and origin of anal in 

 an oblique series; width of head 2^ in its length; depth of head lyV; 

 mandible 2^-^; third dorsal spine 2^; second dorsal ray If; first anal 

 ray 2|; least depth of caudal peduncle 5 ; snout 3f from its tip ; eye 3| ; 

 maxillary 2|; interorbital space 4; upper lobe of caudal 3^ in head and 

 trunk; pectoral 3^. 



Body greatly compressed, ovoid, and anteriorly upper and lower 

 profiles evenly convex. Greatest depth at origin of soft dorsal. Caudal 

 peduncle small, its depth 2^ its length, and its width about § its deptli. 



Head rliomboid, compressed, and blunt anteriorly. Snout short, 

 blunt, and compressed. Eye large, anterior, and with a broad poste- 

 rior adipose eyehd. Mouth oblique and upper jaw projecting slightly 

 beyond snout. Lips fleshy and lower rather broad. Teeth minute, 

 uniserial, in jaws. Small teeth in patches on vomer and palatines. 

 Tongue free, rounded in front, and rather long. Mandible projecting 

 beyond upper jaw. Maxillary reaching posteriorly a little bej^ond 

 front rim of orbit, and its distal expanded extremity half of orbit. Also 

 with a distinct oblique ridge. Nostrils lateral, close together, and a 

 little nearer eye than tip of snout. Interorbital space convexly ele- 

 vated, with a median trenchant keel which begins anteriorly and runs 

 to spinous dorsal. Margin of preopercle convex. 



