458 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
142. Nematonurus cyclolepis sp. noy. 
A species with the general appearance (including the protruding snout, inferior 
mouth, and comparatively weak dentition) of N. armatus and N. affinis, but with the 
dorsals less widely separated, the vent anterior in position, and the scales unarmed, 
as in Moseleya longifilis. 
Head smooth, compressed, without conspicuous ridges. Median and lateral rostral 
ridges terminating in slightly projecting points; the median process, a short 
portion of the median ridge, and the edge of the membrane connecting median 
with lateral processes with spinous scales and points. Snout projecting beyond the 
premaxillaries for two-thirds its length, which is contained 32 times in head. Eye 
small, less than snout, very slightly exceeding interorbital space, 44 in head. Mouth 
small, wholly inferior, maxillary reaching vertical from posterior margin of pupil, 
22in head. Premaxillary teeth in two series—the outer similar to those in mandible, 
not enlarged or canine-like; the inner series smaller, directed obliquely backward. 
A single series of teeth in mandible, not widening into a patch atsymphysis. Barbel 
thick at base, two-thirds length of snout. Preopercle incurved above the angle, the 
lower limb expanded, the marginal region striate. 
First dorsal inserted behind axil of pectoral. Second spine broken in both speci- 
mens, the basal portion smooth, a single sharp barb showing that the spine is serrate. 
The base of the fin equals the length of the snout. Interspace between dorsals 
exceeding length of first dorsal base by one-third to two-fifths length of latter. 
Vent immediately in advance of origin of anal, under middle of interspace between 
dorsals. The dorsal is low and inconspicuous and the anal higher, as usual in this 
group. Pectorals very slender, 1,4, in length of head. Outer ventral ray filamentous, 
reaching third or fourth anal ray. Dorsal 11, 8 or 9; ventral 12. 
Scales mostly lost. The few remaining on head are either entirely smooth or bear 
a single median keel, with one or two low spinous.points. Those on body are with- 
out spines, and are either entirely smooth or show traces of a low median keel. Six 
scales in an oblique series between lateral line and middle of base of dorsal. Color 
dark brown, the anterior portion of back and sides with small scattered black spots, 
Opercles, lower side of head (including gill-membranes and ventral area) black, as 
are also the mouth and gill-cavity and the peritoneum. 
Two specimens, the longest 150 mm., from station 3342, off Queen Charlotte Island, 
depth 1,588 fathoms. 
143. Chalinura filifera sp. nov. 
Related to C. serrula Bean, from the same region and depth, differing in the larger 
eye, shorter mental barbel, longer snout, longer pectoral fins, shorter interspace 
between dorsals, and the longer dorsal fin. Snout short, slightly exceeding diameter 
of eye, 3,4 in head; the median ridge and the nasal ridges terminate each in a much 
projecting point, furnished each with a short rosette of radiating spines and ridges. 
The outline between these points is concave. Tip of snout projecting beyond the 
premaxillaries for a distance equaling that which separates the central rosette from 
one of the lateral ones. Infraorbital ridges inconspicuous, not reaching angle of 
preopercle behind or bony portion in front. 
Mouth large, slightly oblique, with extensive lateral cleft, the maxillary reaching 
vertical from posterior margin of pupil, 23 in head, equaling distance from tip of 
snout to middle of eye. Outer series of teeth in premaxillary strong, succeeded by 
a narrow band of smaller cardiform teeth. Mandibular teeth similar to inner 
band of upper jaw, the band becoming slightly wider at the prominent symphysis. 
Barbel short, one-half to two-fifths length of snout. Eye large, the diameter of orbit 
slightly less than interorbital width or length of snout, 4in head. Angle of preopercle 
produced backward, concealing all but the extreme posterior angle of interopercle, the 
margin appearing serrulate when divested of skin. Gill-membranes joined to isthmus, 
with a posterior free margin. Gill-rakers very short and heavy, 1+ 11. 
