1914.] NATURAL SCIENCES OF PHILADELPHIA. 267 



other teeth in mouth. Inner buccal membranes very narrow, only 

 slightly developed. Tongue large, broad, thick, depressed above, 

 smooth, and free around edges. Lips not developed. Mandibular 

 rami low and broad, and asperous edge of upper jaw includes it all 

 around. Nostrils well separated, though posterior pair a little 

 closer and placed about y in snout length. Interorbital broadly con- 

 vex. Opercle moderate, with few radiating striae, though these 

 covered with thin skin of head. Frontal fontanel moderately broad, 

 extends from about midway between eyes till about midway in 

 snout length, and bones each side with lengthwise striae, though 

 their surfaces covered with thin skin. Occipital process wide, 

 strong, receives dorsal base in its posterior cleft. 



Gill-opening extends forward about opposite middle of eye. Gill- 

 rakers about 3 + 19, lanceolate, sharp-pointed, firm. If in gill- 

 filaments, and latter about 1 j in eye. No pseudobranchise. Isthmus 

 broad. Branchiostegals 9, slender, outer longer. 



Body covered with thin skin, at present rather soft and delicate. 

 No ossifications exposed on head. L. 1. complete, a little high at 

 first, becoming midway along side of caudal peduncle, continuous 

 on caudal base, and with moderately short branches all along its 

 course, giving off both above and below. 



Dorsal origin well anterior or well before first third in combined 

 head and trunk length, with slender compressed smooth-edged spine 

 but little less than first branched or longest dorsal ray, and depressed 

 fin extends 2j to origin of adipose fin. Latter inserted little nearer 

 ventral origin than caudal base, rather elongate and truncate behind. 

 Anal long, inserted about midway between hind maxillary edge 

 and caudal base, first branched ray longest and all other rays gradu- 

 ated down smaller, base of fin about 3^ in combined head and trunk 

 length. Caudal broad, rudimentary rays well developed, very 

 slightly emarginate with upper lobe longer so as to produce oblique 

 hind edge. Pectoral with compressed slender pungent smooth- 

 edged spines ending in flexible tip, fin broad, low, reaches slightly 

 beyond ventral, and its own insertion but slightly l^efore dorsal. 

 Ventral broad, low, insertion well behind dorsal base, and fin reaching 

 back nearly to first branched anal ray base. Vent close in front of 

 anal, its surrounding area greatly constricted. 



Color in alcohol largely grayish or slaty-bro\vn on back, sides and 

 lower surface whitish. Head brownish above, obscurely mottled 

 with dusky. Iris slaty. Lower surface of head, breast, and belly 

 whitish. Opercle with dusky border below. Edge of gill-opening 



