57 
✓ 
Depth 5 7/8; head 5 l/4, width 3. Snout 3 l/2 in head from snout tip 
to eye; orbit 3 1/4; eye 4, 1 l/4 in snout, twice interorbital; maxillary 
reach 1/5 in eye, expansion 1 2/3 in eye, length 2 3/5 in head; interorbital 
2 in eye, very low, depressed, nearly level; opercle above with 2 keels, ap¬ 
proximate above in front. Gill rakers 7 4 20, lanceolate, slender, 2 in eye 
or nearly 4 times gill filaments. 
Scales 43 in lateral line to caudal base; 5 above, 5 below, 24 predorsal 
forward to occiput. B ase s of vertical fins scaly. 1#t edian, well developed, 
moderate, trenchant predorsal keel nearly forward to occiput, though less marked 
anteriorly. Scales deciduous, all lost. 
D. V, 13, I, rays broken, first branches ray 2 4/5 in total head length; 
A. IV, 16, I, first branched ray 2 l/4, fin origin opposite dorsal origin; 
caudal damaged, apparently forked, rudimentary rays 10 above or below, moderate; 
least depth of caudal peduncle 3 l/2; pectoral 2 l/3; ventral 2 4/5 (?) 
Head blackish. Iris neutral black, pupil ivory white. Inside gill 
opening and mouth blackish. Body rusty brown, dusky or neutral dusky on belly. 
Paired fins dark brown, vertical fin light, paler terminally. 
Gulf of Mexico. 
43739 U.S.N.M. N. 28 0 38 1 30 ” W. 87 ° 2 ’. In 420 fathoms. 
Albatross Station 2394. March 13, 1885. I'ength 136 to. Type* * 
A 
Bathytroctes hataii new species 
Depth 5 to 5 l/$; head 3 l/2 to 3 2/3, width gl.l/2 to 2 2/3. Snout 
3 1/3 to 3 2/5 in head; eye 3 l/3 to 4, equals snout, twice or more width of 
interorbital; maxillary reaches l/4 to l/3 in eye, expansion 2 to 2 l/8 in 
* 
eye, length 2 3/5 to 2 2/3 in head.; interorbital 2 l/2 to 2 4 / 6 , concave. 
