io6 REPORT OF NEW JERSEY STATE MUSEUM. 



anteriorly ; width of head, 2 in its len^h ; depth of head i ; snout 

 6; eye 3^4 5 maxillary 3^4 5 mandible 2%; interorbital space 4; 

 first developed dorsal ray i }i ; lower caudal lobe i ; first devel- 

 oped anal ray 29/^; pectoral i^ ; ventral 2; least depth of 

 caudal peduncle 2^3 ; base of anal 3% in head and trunk. Body 

 compressed, rather deep, somewhat ovoidly rhomboid, and g-reat- 

 est depth about origin of dorsal. Nuchal and thoracic regions 

 bulging a little on anterior profiles. Caudal peduncle com- 

 pressed, its least depth equal to its length, from base of last anal 

 ray. Head rather small, compressed and deep, obtuse in front. 

 Profiles similarly inclined. Snout short, obtusely convex in pro- 

 file, and somewhat compressed. Eye rather large, anterior, cir- 

 cular, and about midway in depth of head. Adipose eyelid well 

 developed, the exposed portion of eye a little less than half its 

 diameter. Mouth a little inferior, upper jaw produced beyond 

 mandible, and maxillary reaching about opposite front margin 

 of pupil. A groove along side of mandible obliquely back from 

 below posterior extremity of maxillary. Teeth in narrow bands 

 in jaws, and minute. Vomer and palatines edentulous. Tongue 

 rather large, triangular, thick, free marginally, but with median 

 frenum extending well forward so that it is adnate with floor of 

 mouth. Rami of mandible well elevated inside of mouth. Nos- 

 trils together, lateral, and near front margin of eye. Upper 

 surface of head adipose-like over eye, and interorbital space well 

 elevated convexly. Symphysis of mandible with a tubercle, fit- 

 ting in a depression in upper jaw when mouth is closed. Gill- 

 opening extending forward till not quite opposite front rim of 

 pupil. Rakers 135 + no?, fragile, slender, short, longest ^/j 

 longest filaments which are a little shorter than orbital diameter. 

 Pseudobranchise nearly twice as long as longest rakers. Isthmus 

 a little broad, with flattened surface. Scales large, narrowly im- 

 bricated, cycloid, and forming nearly horizontal series, those in 

 front of dorsal not completely crossing over, but leaving a nar- 

 row naked strip medianly on back. Head naked. Abdomen 

 medianly from gill-opening to vent with 30 robust keeled serra- 

 tures. Fins naked, except base of caudal, which is covered with 

 small scales. Small scales along base of anal forming a low 



