FISHES OF HAWAIIAN ISLANDS. 
675 
preoral portion of snout, without terminal spine; teeth minute, in wide bands in each jaw, none of them 
at all enlarged; barbel half as long as diameter of pupil; near tip of snout, on lower side, a small patch 
of prickles, similar to those covering infraorbital ridge, and like them adnate to the bone; with this 
exception all the region below infraorbital ridge, including mandibles, is smooth, without scales, 
prickles, or tubercles (in C. parallelus all of this region, except gular and branchial membranes, is 
thickly beset with irregular small plates, each bearing from 1 to 3 spines ) ; where the gill-membranes 
are joined across throat they form a narrow free fold; gill-rakers represented by small tubercles, 7 or 8 
in number on outer arch. 
First dorsal fin inserted well behind axil of pectorals; predorsal region invested with scales similar 
to those of sides, arranged in regular series, and scarcely reduced in size; second dorsal spine smooth 
throughout, very slender and weak, its terminal portion as flexible as the rays; length of dorsal spine 
equal to that of snout; distance b'etweemdorsals equal to base of first dorsal exclusive of the 2 spines; 
anal originating a trifle behind front of second dorsal; anal opening immediately before origin of anal 
fin, its distance from inner base of ventrals a trifle less than the distance from latter to margin of the 
gill-membranes on median line; this measurement remains almost constant in specimens of very 
different size. In a specimen of C. parallelus from Misaki, Japan, and in Gunther’s figure (Kermadec 
Islands) the distance from base of ventrals to vent is much greater than between ventrals and edge of 
gill-membrane. In C. aratrum, the ventral filament reaches vent. 
Scales of back and sides each with 6 to 15 strong spines arranged in 3 to 5 nearly parallel series. 
The spines stand out at an angle of 45°, those of the central series somewhat larger than those of the 
lateral rows, and the spines in each row increasing rapidly to the posterior one, which projects well 
beyond margin of scale in both median and lateral series; the spines are longer and slenderer than in 
a specimen of C. parallelus from Japan, and there is less inequality between central and lateral series; 
on breast, the scales have 3 to 5 short, strongly radiating series of spines, the spines shorter than those 
on sides; scales of lateral line have 2 equal series of spines, separated by the tube, and have fewer lateral 
series, or none; on head, the spines are more numerous and much slenderer, and project nearly at right 
angles to the surface, giving a characteristic hispid appearance to the entire top and side of head; they 
are arranged with less regularity, but usually in strongly diverging or stellate series; the}'' are much 
more numerous than in parallelus, and have all the series equal or nearly so; 5 series of scales between 
lateral line and dorsal fins; the series running upward and backward from first scale of lateral line 
runs to base of dorsal spine; 4 series cross the back between dorsal fins. 
Color, light brown above, whitish on lower side of snout and below pectoral fin; mouth and gill 
cavities and abdominal cavity lined with blue-black, this color faintly visible through opercle, gill- 
membrane, and abdomen; first dorsal black at base, bright white distally; pectorals, second dorsal, 
and anal dusky or whitish; ventrals dusky at base, then white. 
Taken at stations Nos. 3910, off. the south coast of Oahu, 311 to 337 fathoms; 3914, off the south 
coast of Oahu, 289 to 292 fathoms, and 4088, Pailolo .Channel, 297 to 306 fathoms. 
Ccelorhynchus parallelus Gilbert & Cramer, Proc. U. S. Nat. Mus., XIX, 1897, 421; not of Gunther. 
Coelorhynchus doryssus, new species. Plate 94. 
Type, 345 mm. long, at station 4109, Kaiwi Channel, depth 442 to 449 fathoms; type, No. 51616, 
U. S. Nat. Mus. 
Similar to C. aratrum, but with the snout more slender and more convex; the mouth much larger, 
the scales on head minutely spinous, those on body much less strongly spinous, and the coloration 
much lighter. 
Depth of body 2.2 in length of head; D. ii, 7, last ray cleft to base; V. 7; P. 17. 
Lateral contour of head forming a nearly straight line, the outlines of the long narrow snout scarcely 
at all convex, converging regularly from base to tip; upper profile of snout longitudinally concave, the 
deepest point in the concavity being at origin of the second third of its length; width of snout opposite 
front of orbits contained 1.4 in its length; at its middle, the width of the snout is half its preoral por- 
tion; the snout ends in a definite short spine; vertical diameter of orbit contained 1.6 times in its longi- 
tudinal diameter, which equals -the convex interorbital width, and is contained twice in snout; upper 
margin of orbit much less curved than the lower or lateral margins; the pore-like anterior nostril is 
but a fourth the vertical length of the posterior, the 2 nostrils separated by a black membrane; ridges 
