1918.1 NATURAL SCIENCES OF PHILADELPHIA, 21 



also profile, length about f its width. Eye large, circular, impinging 

 slightly on upper profile, and head center in length midway between 

 hind pupil and hind eye edges. Mouth moderately large, scarcely 

 inclined from horizontal, and closed lower jaw included within upper. 

 Maxillary large, little inclined, nearly straight, and reaches past 

 eye center nearly opposite hind pupil edge. Terminal maxillary 

 expansion 3 in eye, little emarginate behind, and whole upper max- 

 illary edge slips below preorbital. Preorbital rather narrow, width 

 about 4 in eye. Lips rather narrow, fleshy, firm. Teeth fine, even, 

 short, in narrow bands in jaws. Also similar narrow band over 

 vomer to and on each palatine. Tongue free, depressed, smooth, 

 rather rounded in front. Front nostril lateral on snout, slightly 

 nearer snout tip than eye, in short tube. Hind nostril short vertical 

 slit close before front eye edge. Interorbital with slight furrow 

 each side in front, slightly convex behind. Preopercle ridge entire, 

 and hind edge minutely serrate. Opercle with small spine above 

 and smaller one median on hind edge. 



Gill-opening about opposite front pupil edge. Rakers ii, 3 + 12, 

 IV, lanceolate, rather robust, about f of filaments and latter 3 in 

 eye. Pseudobranchise large as filaments. Isthmus long, constricted 

 forward, and with median trenchant keel anteriorly. 



Scales large, finely ctenoid, above lateral line in rows parallel with 

 its course, and below in horizontal rows. Head scaly, cheek Avith 

 2 rows of large scales, though hind row greatly crowded or concealed 

 under front row, and scales on opercles moderate. Suborbitals and 

 upper surface of head with numerous mucous channels. Large scaly 

 flap between ventral bases nearly half length of fin. Axillary ven- 

 tral scale small and inconspicuous. Caudal base covered with 

 small scales, otherwise fins naked. Lateral line complete, largely 

 concurrent with dorsal profile. Tubes simple, extend well over 

 scales, and with appearance as if located on somewhat small obscure 

 accessory scale. 



Spinous dorsal inserted about opposite pectoral origin, third spine 

 longest, second and seventh subequally short, though longer than 

 first. Soft dorsal inserted about midway between caudal base 

 and hind eye edge, second ray apparently highest, and depressed 

 fin If to caudal base. Spinous anal inserted opposite second dorsal 

 origin, first spine scarcely j of second. Soft anal smaller than soft 

 dorsal, otherwise similar. Depressed anal If to caudal base. Caudal 

 very slightly emarginate behind, lobes rounded. Pectoral mod- 

 erate, reaches anal, upper rays longest. Ventral inserted slightly 



