78 



PROCEEDINGS OF THE ACADEMY OF 



[Jan., 



extremity equal to about f of orbit, and its entire upper edge slipping 

 below prcorbital edge. Teeth of upper jaw biserial, those forming 

 outer series enlarged conic and forming a single series, and those inside 

 forming a band of small pointed teeth broadest and mostly developed 

 anteriorly. Mandibular teeth like outer series in upper jaw, and also 

 uniscrial. A finely asperous small triangle on vomer. Surfaces of 

 palatines and tongue with broad spaces finely asperous. Tongue 

 rather elongate, thick, rounded, and free in front. Nostrils adjoining, 

 small slits, above middle of orbit in its vertical diameter, and also 

 nearer front of same than tip of snout. Supraocular ridge a litt e 

 pronounced. Top of head strongly convex and a somewhat obsolete 

 median keel from internasal space to occiput. 



Fig. 5. — Caranx pisquetus Cuvier. 



Gill-opening carried forward about midway between front of eye 

 and posterior nostril. Rakers i, 15 + 25, i, slender, compressed, and 

 longest equal to longest filament or aljout f of orbit. Pseudobranchise 

 about equal to diameter of pupil. Isthmus with a rather broad groove 

 on lower surface. 



Scales small, cycloid, extending over chest entirely and good portion 

 of all rayed fins basally. On occipital region small, larger on postocu- 

 lar region, and again smaller on cheek. With exception of these regions 

 together with upper side of head and operclc, head is naked. Adi])Ose 

 eyelid narrow, not covering much of iris posteriorly. No scales on 

 spinous dorsal and anal, these fins each depressible in a groove along 

 each side of which a sheath of fine scales is formed. Anterior rays 

 forming lobes of soft dorsal and anal covered with minute crowded 



