94 
strongly emarginate; pectoral rays 3, fin low, small; ventral rays 6 or 7, 
origin midway between pectoral base and hind edge of anal base. 
Jet black, fins all paler. Black nodules sparsely scattered throughout 
body, length 265 mm. (Tanaka.) 
Japan. 
Rouleina squamilaterus (Alcock) 
Xenodermiohthys squamilaterus ALCOCK, Ann. Mag. Nat. Hist., series 7, vol.2, 
1898, p.148. Off Andaman Islands, in 370 to 419 fathoms; Illustrat. Zool. 
Investigator, pt.6, 1899, pi.25, fig.4; Cat. Deep Sea Fishes Indian 1! %s., 
1899, p.181 (Arabian Sea, 370 to 419 fathoms). 
Aleposomu s (Rouleina ) squamilater us MC CU110CH, Biolog. Bes. Endeavour, vol.5,, 
pt.4, June 8, 1926, p.163, pi.44, fig.l (Great Australian Bight, 350 to 
450 fathoms)• 
Rouleina squamilaterus NORMAN, Discovery Rep., vol.2, 1930, p. 271 (reference). 
T\ • 
Depth 4 2/5 to 5 2/3; head 3 l/4 to 3 l/2, width 2 3/5 to 2 2/3. Snout 
4 to 5 2/3 in head from snout tip to eye; orbit 3 2/5 to 3 l/2; eye 4 3/5 to 
4 3/4, greatly exceeds snout or interorbital; maxillary reaches nearly opposite 
hind eye edge, expansion 1 l/3 to 2 s/4 in eye, length 2 'l/lO to 2 l/5 in head 
from snout tip; interorbital 1 3/4 to 2 l/4 in eye, 7 2/3 to 8 4/5 in head from 
snout tip, low, with deep median groove. £?ill rakers 8 or 9 f 12 to 20, lanceol¬ 
ate, 2 l/2 in eye; gill filaments 2/5 of gill rakers. 
Lateral line distinct, axial along side of body. 
D. VI, 14, _I,rays all broken, fin base 1 l/2 to 1 3/5 in total head length, 
fin origin midway between hind gill opening and caudal base; A. _II, 13 or 14 ; 
