1338 
Scales 22 to 27 enlarged In lateral line to vent; 17 
above, 4 below, 35 to 40 predorsal to occiput. Top of head 
naked, postocular scaly. Dorsal and anal scaly. Scales 
fairly adherent. Scales with 11 or 12 long basal radiating 
striae; circuli very fine and well crowded apically so only 
rather narrow apical border entire. 
D. I, 8, I or I, 9, I, second branched ray 2 to 2 1/3 
in head, fin origin at first eighth between ventral and anal 
origins; anal height anteriorly 4; tail extended in long fila¬ 
ment; pectoral 1 3/5 to 1 2/3; ventral 3 1/10 to 3 l/4. 
Dark brown, many of scales with light pearly median spot. 
Under parts, including snout, sides of head, subpectoral re¬ 
gion and gill openings black, more bluish well within latter. 
Iris gray. Under surface of head neutral violaceous black. 
Dorsal and pectoral dusky basally, paler terminally. Anal 
dusky, lighter basally. Ventral dusky. Young with black 
vertebral band behind dorsal fin. 
Pacific,Ocean. This species greatly suggests Halosaurus 
macrochir, especially in its long pectorals, scaleless vertex, 
though its dorsal apparently lower and gill rakers more numer- 
our. 
51612 U. S. N. M, Vicinity of Kauai. In 724 to 804 
fathoms. Albatross Station 4018. Length 648 mm. Type. 
51703 U. S. N. M. Albatross Station . Length 283 
to 628 mm. Paratypes. 
