948 . 
HyEienocephgilua aterrimus Gilbert 
Eymenooephalus aterrimus Gilbert. Bull. U. S. Fish Comm., vol* 23, pt. 2, 
p. 666, pi. 93, 1903 (1905) (type locality : off Kauai Islandj Molokai; 
Kaiwi Channel; Bird Island; Nihau; 293 to 800 fathoms). —Gilbert and 
£B3S553SmS2HSE? 
Hubbs , Proc. U. S. Nat. Mus., vol. 51, p. 145, 1916 (reference); Bull. 
U. S. Nat. Mus., No, 100, vol. 1, pp. (521) 539, 540, 1920 (reference). 
—Fowler, Mem. Bishop Mus., vol. 10, p. 87, 1928 (compiled). 
ar « u —— 
Depth 6 l/4 to 7; head 4 7/8 to 5 2/3, width 1 4/5 to 2 l/8. 
Snout 3 l/2 to 4 in head; eye 3 l/2 to 4 l/4, 1 to 1 2/5 in snout, 1 
2/3 to 1 7/8 in interorbital; preoral length 4 to 4 3/5 in head; maxil¬ 
lary reaches opposite hind eye edge, length from front end 1 3/4 to 1 
#/5 in head; no barbel; teeth form very narrow, villifora bands in jaws* 
minute, depressible, in but few or several series; interorbital 2 l/2 to 
3 in head, low, cavernous like most of head and concave. Gill rakers 4 
or 5+20 or 21 low compressed spinuliferoue tubercles on second arch, 
long as gill filaments, which l/3 of eye. 
Scales all very caducous, all fallen, (pockets) 90 in lateral 
1 , 
* 
line; 3 above, 5 below. 
D. II, 9_114, second simple ray slender, entire, 1 3/5 to 2 
in head; interdorsal space 1 l/2 to 1 2/3; A. 110, fin height 2 4/5 to 
3; pectoral rays I, 12, fin 1 l/5 to 1 l/2 in head; ventral rays 1, 12 
or I, 13, fin 1 l/4 to 1 2/3 in head, first simple ray ending in filament. 
Head and trunk below neutral black, trunk above and tail dark 
brown. Iris dark neutral gray. Inside mouth and gill opening black. 
Fins all more or less dusky, especially basally. 
