1911.] NATURAL SCIENCES OF PHILADELPHIA. 567 



sion 2 in eye. A series of firm erect sharp-pointed slender teeth 

 concealed by lip along premaxillary, inside another series of longer 

 depressible ones, all directed at least a little forward. Mandible 

 with similar teeth, outer series smallest, but 2 inner rows both 

 depressible and of these inside row longest of all. Palatines with 

 2 rows of small slender teeth, inner longer and more depressible. 

 Band of teeth in jaws and on palatines not continuous in front. 

 Tongue triangular, rather narrow, free in front, with about 6 rows 

 of irregular slender pointed and depressible teeth. These continued 

 back on basibranchial arch as more narrow band, and all teeth much 

 smaller. Mandible low, surface convex and tip little short of snout 

 tip. Nostrils together, near last fourth in head, anterior with small 

 flap, apparently not fringed. Interorbital well concave. Post- 

 orbital width about 2 in eye. Hind preopercle ridge a little more 

 curved back below, where about an eye-diameter distant from hind 

 premaxillary edge. Opercle width about half its length. Upper 

 suprascapular edge entire. Anterosupraorbital processes well devel- 

 oped. Cranium roughly striate and rugose. 



Gill-opening forward trifle before middle in head. Rakers as 

 minute fine denticles, numerous, sharp. Filaments If in eye. 

 Pseudobranchiae little smaller than filaments. Isthmus narrowly 

 constricted, slender. Branchiostegals about 17, slender. 



Scales in even longitudinal series parallel with 1. I., axis of each 

 well inclined posteriorly, all rather narrowly exposed, edges entire, 

 reduced and smaller on breast and caudal base, latter with 2 elongated 

 flaps, one at base of each lobe. Pointed free slender axillary ventral 

 scaly flap, 3| in fin. Cheek scales in 7 series, lower hind portion for 

 nearly half its area naked. Opercles below naked, only few scales 

 above. L. 1. complete, sloping gently from shoulder to median 

 caudal base, each scale in its course marked by small accessory 

 basal or crimped scale. 



Dorsal origin a little nearer adipose fin origin than snout tip, 

 first branched ray longest, but only extending about first fourth in 

 length of last, fin 2\ to caudal base. Adipose fin small, inserted 

 about midway between dorsal tip and caudal base, fin 5 to latter. 

 Anal inserted about midway between last dorsal ray base and caudal 

 base, fin If to latter, first branched ray longest, fin edge below 

 notched. Caudal deeply forked, sharp-pointed lobes about equal. 

 Pectoral short, reaches f to dorsal origin. Ventral inserted before 

 pectoral tip, trifle nearer pectoral than dorsal origin, depressed fin 

 If to anal, with innermost branched ray longest. Vent about f an 

 eye-diameter before anal. 



