668 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Macrourus holocentrus Gilbert & Cramer. 
One specimen was taken at station 3909, off the south coast of Oahu, 308 to 322 fathoms. 
Head and trunk very slender, the head with rounded outlines and no ridges; longitudinal profile 
of snout convex; interorbital space and occiput concave; suborbital flat, without ridge; spines on scales 
long, slender and flexible, bristle-like, closely crowded, but in rather definite parallel series, though 
not borne upon ridges; on head and along predorsal area, the spines shorter and frequently in radiating 
lines; mandible naked in this specimen and in one of the cotypes of the species. In the latter there 
are 8 ventral rays, in the former 9. 
The following corrections and additions may be made to the original description: Median rostral 
tubercle on a level with middle of eye; premaxillaries anteriorly below level of eye; maxillary reach- 
ing slightly beyond middle of orbit; gill-membranes with a wide free fold where they cross isthmus; 
serrations of second dorsal spine small, 11 or 12 in number, evenly spaced along entire spine except 
the filamentous portion; second dorsal spine very slender; last rays of first dorsal not nearly reaching 
second dorsal when declined; length of first dorsal base 0.6 the interspace between dorsals; ventral 
fin, excluding outer filamentous ray, reaching base of second anal ray; back light gray, with some 
dusky mottlings; lower half of gill-cavity whitish. 
Macrourus holocentrus Gilbert & Cramer, Proc. U. S. Nat. Mus., XIX, 1897, 426, pi. xliii. 
Macrourus gibber Gilbert & Cramer. 
Taken at a number of localities but never abundantly. The following additions and corrections 
may be made to the original description. 
Infraorbital ridge occupying a very oblique position, but not approaching the vertical; tip of pre- 
maxillaries far below level of middle of eye, their horizontal plane intersecting eye midway between 
lower margin of pupil and lower margin of orbit; teeth of outer series not enlarged; posterior 
margin of preopercle nearly vertical, the angle broadly and evenly rounded; gill-membranes with a 
narrow free posterior margin on middle line below; dorsal profile ascending strongly to origin of 
dorsal, then descending abruptly along base of fin, forming a conspicuous triangular hump; length of 
pectorals 0.7 that of head; lateral line nearly obsolete^ membranous tubes present on occasional scales 
or groups of scales only. 
Scales on back and sides thin, deciduous, furnished with very slender, closely appressed spines, 
which are arranged in parallel series directed somewhat obliquely downward and backward; on the 
back the series of spines may slightly diverge, as given in the figure above cited; spines distinct, not 
located on ridges; on breast and sides of head, the scales are thicker and the spines stronger, arranged 
in series which usually diverge; subocular ridge and the lateral pair of rostral ridges covered with 
very strongly spinous scales; the 3 rostral tubercles bear rosettes of strong spines; spaces between 
median and lateral rostral ridges naked, or with a few scattered cycloid scales; lower side of snout 
and anterior half of space between mouth and subocular ridge naked; mandibles naked, ending 
posteriorly in a spinous point, which does not project. 
Taken at the foliowing stations: Nos. 3842, off the south coast of Molokai, 495 to 506 fathoms; 
3985, vicinity of Kauai, 433 to 477 fathoms; 3989, vicinity of Kauai, 385 to 500 fathoms; 3994, vicinity 
of Kauai, 330 to 382 fathoms; 3997, vicinity of Kauai, 418 to 429 fathoms; 4007, vicinity of Kauai, 508 
to 557 fathoms; 4014, vicinity of Kauai, 362 to 399 fathoms; 4022, vicinity of Kauai, 376 to 399 fathoms; 
4028, vicinity of Kauai, 444 to 478 fathoms; 4041, off the west coast of Hawaii, 253 to 382 fathoms; 
4109, Kaiwi Channel, 442 to 449 fathoms; 4112, Kaiwi Channel, 433 to 447 fathoms; 4113, Kaiwi 
Channel, 395 to 433 fathoms; 4137, vicinity of Kauai, 411 to 476 fathoms; 4139, vicinity of Kauai, 339 
to 512 fathoms; 4141, vicinity of Kauai, 437 to 632 fathoms; 4166, vicinity of Bird Island, 293 to 800 
fathoms. 
Macrourus gibber Gilbert & Cramer, Proc. U. S. Nat. Mus., XIX, 1897, 426, pi. XLIV, fig. 2. 
Macrourus burragei, new species. Fig. 260. 
Type, 265 mm. long, from station 3917, off the south coast of Oahu Island, in 294 to 330 fathoms; 
type, No. 51641, U. S. Nat. Mus. 
Closely allied to M. holocentrus , but with deeper body, blunter anterior profile, larger first dorsal 
fin, shorter abdomen, and much smaller scales. 
