64 
3 l/2, equals snout, greatly exceeds interorbital; maxillary reaches 2/5 in 
eye, expansion 1 7/8 in eye, length 2 l/6 in head from snout tip; interorbital 
very narrow, level, 2 l/2 in eye; opercle with 2 strong oblique keels radiating 
from upper front portion. Gill rakers 9 - 25, lanceolate, slender, 1 2/3 in 
eye; gill filaments 2/5 of gill rakers. 
Scales 50 in lateral line to caudal base; 5 above, 5 below, 30 predorsal 
forward to occiput. Scales very caducous, all fallen, apparently present on 
caudal base, 
« 
D. 15, rays apparently short, all now broken, fin origin nearly midway 
between hind preopercle edge and caudal base, fin base 2 l/8 in total head . 
length; A, 11, rays broken, appear short, fin origin at last 2/5 in dorsal 
base, fin base 2 3/5 in total head length; caudal broken, apparently forked, 
rudimentary rays 9 above or below, little prominent; least depth of caudal 
peduncle 5 l/8; pectoral 3 l/5 (?), short; ventral 3 l/2, inserted little 
nearer front eye edge than caudal base, 
Head black, ®ye neutral black. Inside mouth and gill opening black. 
Body dusky or dark blackish brown, especially belly. Fins brownish. 
Off Lower California. 
87553 U.S.H.M. 
In 590 fathoms. Albatross Station 5674. March 8, 1911. Length 125 mm. 
Type. 
Bathytroct es alvifrons Garman 
Bathytroctes alvifrons GARJIAH, Mem. Comp. Zool., vol.24, 1899, p.286, 
pi.58, figs.2 - a. N. 6 0 21 ’ W. 80 ° 41 ', 1793 fathoms; N. 2 0 34 
' W, 92 0 6 ’, 1360 fathoms. Gulf of Panama. 
