84 
striae around tend. Gill rakers 7 21, lanceolate, slender, 1 2/5 in eye; 
gill filaments 3/4 of gill rakers. 
Scales 62 in lateral line to caudal base and 3 (?) more on latter; 7 above, 
7 below, 44 predorsal forward to occiput. Bases of vertical fins evidently 
scaly. Scales thin, cycloid, very caducous, most all fallen. Tubes in lateral 
line slender, well marked, emphasized with black pigment terminally. 
D. 23, I, rays all damaged, low, fin origin midway between beginning of 
lateral line and caudal base, fin base 14/5 in head; A. 6, _I, small, rays all 
V_ 
damaged, low, fin inserted close behind hind basal end of dorsal, base length 
6 in head; caudal damaged, apparently forked, 14 or 15 rudimentary caudal rays 
above or below, not prominent; least depth of caudal peduncle 4; pectoral 2, 
long, reaches close to ventral; ventral 2 l/3 (?), well advanced or fin origin, 
much nearer snout tip than caudal base; vent well in advance of dorsal or but 
. 
slightly nearer anal origin than pectoral. 
Head black. Iris slate black. Inside mouth and gill opening black. Body 
brown, dusky on belly. Fins brownish, paired ones darker. 
Diagnosis. Contained chiefly in the subgeneric distinctions. 
Type Ho. IT.S.N.M. 
10100. D. 5282. Malavatuan Island (N.), S. 84 ° W., 6. 20 miles (N. 
o 
13 53 ’ E. 120 26 1 45 "), China Sea vicinity of southern Luzon. In 
248 fathoms. July 18, 1908. Length 158 mm. Type. 
Genus PLATYTROCTEGEN Lloyd 
Plat ytrocteg en LLOYD, Mem. Indian Mus., vol.2. Ho.3, Aug. 1909, p.145. 
Type Platytroctegen mirus LLOYD, monotypic 
