FISHES OF HAWAIIAN ISLANDS. 
601 
Specimens were taken at the following stations, all in the surface tow: Nos. 3878, south of Lanai; 
3889, north of Molokai; 3912, south of Oahu; 3926,' west of Oahu; 3927, south of Bird Island; 3929, 
south of French Frigate Shoals; 3930, near Laysan Island; 3980, south of Oahu; 4009, east of Kauai; 
4010, east of Kauai; 4145, west of Kauai, Bird Island. 
Dasyscopelus prislilepis Gilbert & Cramer, Proc. U. S. Nat. Mus., xix, 1897, 412, pi. 39, fig. 1. 
Neoscopelus macrolepidotus (Johnson). 
No Atlantic material has been at hand for comparison, but a single specimen from Japan « seems to 
to agree completely with the Hawaiian specimens. No individuals were taken at the surface, but it is 
perhaps doubtful whether the following stations, taken with other recorded depths, can be accepted as 
giving the vertical range of a bottom form: Nos. 3824, off the south coast of Molokai, 222 to 498 fathoms; 
3892, off the north coast of Molokai, 328 to 414 fathoms; 3973, vicinity of French Frigate Shoals, 395 
to 397 fathoms; 3979, vicinity of Bird Island, 222 to 387 fathoms; 3994, vicinity of Kauai, 330 to 382 
fathoms; 4014, vicinity of Kauai, 362 to 399 fathoms; 4021, vicinity of Kauai, 286 to 399 fathoms; 
4025, vicinity of Kauai, 275 to 368 fathoms; 4041, off the west coast of Hawaii, 253 to 382 fathoms; 
4137, vicinity of Kauai, 411 to 476 fathoms; 4166, vicinity of Bird Island, 293 to 800 fathoms. 
Family MAUROLICIM. 
Argyripnus ephippiatus Gilbert & Cramer. 
Three specimens were obtained at the following stations : Nos. 4085, off the north coast of Maui, 267 
to 283 fathoms; 4121, off the northwest coast of Oahu, 216 to 251 fathoms. 
The species has been referred by Garman (Mem. Mus. Comp. Zool., XXIV, 1899, p. 399) to the 
genus Valenciennellus Jordan and Evermann. It differs, however, in the much more anterior position 
of the dorsal fin in comparison with the anal, and in the widely divergent arrangement of the photo- 
phores. An adipose dorsal is well developed, a character which escaped attention in the type owing 
to mutilation. 
Argyripnus ephippiatus Gilbert & Cramer, Proc. U. S. Nat. Mus., XIX, 1897, 414, pi. 39, fig. 2. 
Argyropelecus heathi, new species. Plate 72, fig. 1. 
Type, 31 mm. long, from station 4107, Kaiwi Channel, between Oahu and Molokai, depth 350 to 
355 fathoms; type, No 51632, U. S. Nat. Mus. 
Head 3.5 in length to base of caudal; depth 1.9. D. vn+8; A. 11*; P. 9. Depth of body less 
than in other species of the genus, contained 1.3 in length of trunk and tail; caudal peduncle very 
slender, its least depth but half its length posterior to last anal ray; eyes lateral in position but directed 
vertically upward, separated by a very narrow ridge; longitudinal diameter of eye 0.3 the length of 
the head; exposed portion vertically oblong in shape, the vertical diameter being half greater than 
the horizontal.; pupil confined to extreme upper half of exposed area. 
Cleft of mouth nearly vertical; when closed the mandible fits within the upper jaw; mandibular 
symphysis with a scarcely noticeable prominence; length of maxillary contained 1.2 times in head, 
premaxillary lying along the anterior margin of its proximal half; premaxillary teeth minute, in a single 
series, the lateral teeth directed toward angle of mouth; beyond end of premaxillary bone, the maxil- 
lary is provided with a single series of similar teeth, all or nearly all retrorsely set; mandibular series 
with slightly larger hooked teeth, in a narrow patch at symphysis, a single series laterally; no teeth 
can be detected on the vomer or palatine bones; gill-membranes widely joined, free from isthmus; 
branchiostegal rays 9; gill-rakers long and slender, 6+12 on the outer arch; pseudobranchire well 
developed; the preopercular angle bears 2 large spines, the longer one. directed vertically downward, 
the other obliquely upward and backward; the angular bears a short triangular spine, and the clavicu- 
lar symphysis a similar larger spine; the abdominal crest, between ventral and pectoral fins, formed by 
the union of 12 pairs of plates, each of which covers a luminous organ, the plates without ridges, serra- 
tions or spines; posteriorly, for a space corresponding to the last 3 plates, the crest is formed by a very 
thin bony lamella derived from the pelvic girdle, this plate increasing in height posteriorly and termi- 
a Since the above was written, the Japanese specimen referred to has been made the type of a new species, N. alcocki 
Jordan & Starks (Bull. U. S. Fish Com. for 1902, 580, pi. 2, figs. 1 and 2), but as no direct comparison has been made with 
Atlantic material, the name is not adopted in this paper. 
b A wider interspace in the middle of the series apparently indicates the loss of a ray, thus making 12 in all. 
