570 PROCEEDINGS OF THE ACADEMY OF [Oct., 



buccal folds broad. Mandible large, when closed included within 

 upper jaw, rather shallow and rami not elevated inside mouth. 

 Nostrils large, together, close before eye, anterior simple pore and 

 posterior larger, crescentic. Interorbital broadly convex. Pre- 

 orbital narrow. Infraorbital broad, its width extends over f of 

 cheek, surface smooth or with but few papillae. Preopercle with 

 ridge and hind edge smooth, latter sloping slightly posteriorly. 

 Opercle deep, with few papillae, and hind edge slightly emarginate 

 above. Head with well-developed fontanel above extending from 

 between frontals medianly to occipital process. Latter short and 

 slenderly triangular. 



Gill-opening extends forward about opposite first | in eye. Rakers 

 IV, 3+6, II, slender, lanceolate, rather asperous, about | of eye 

 diameter and about twice length of filaments. Isthmus slender and 

 constricted, rather narrow and elongate, surface smooth. Branchi- 

 ostegals slender, rather long. 



Scales very small, well exposed in longitudinal series mostly 

 parallel with 1. I., each roughened with six or more minute prickles 

 or thorn-like denticles. Along predorsal and on caudal base scales 

 crowded or smaller. Greater portion of anal base anteriorly with a 

 series of scales, becoming inconspicuous posteriorly. Ventral axil 

 with short, free, pointed, scaly flap. L. 1. complete, straight, and 

 nearly median along sides to caudal base medianly. Tubes simple, 

 each well exposed or extend to hind edge of scale. 



Dorsal origin midway between snout tip and caudal base, first 

 branched ray longest, and depressed fin extends If to caudal base. 

 Adipose fin inserted near last third in space between snout tip and 

 caudal base. Anal inserted a little behind dorsal origin, or about 

 midway between front pupil edge and caudal base, first branched 

 ray longest and with anterior rays forming slight elevated lobe. 

 Caudal well forked, lobes pointed and subequal. Pectoral low, 

 pointed, upper rays longest and extends | to anal. Ventral inserted 

 trifle nearer anal origin than that of pectoral, and extends back 

 slightly beyond front of anal. Vent close before anal. 



Color in alcohol pale brownish generally, sides and lower surface 

 paler. Head above and back above shaded with close-set pale 

 dusky dots, and on trunk above anal base and at caudal other 

 similar dots, at former region wide-set and at latter region comprise 

 an area nearly large as eye. Above 1. 1. close behind head dusky 

 spot about size of pupil. Lower surface of head whitish. Iris slaty. 

 Fins all grayish, lower ones more whitish. 



