FISHES OF HAWAIIAN ISLANDS. 
583 
Family SYNAPHOBRANCHIDAi. 
Synaphobranchus bracbysomus, new species. Fig. 232. 
Type, 71 cm. long, from station 4019, vicinity of Kauai, depth 409 to 550 fathoms; type, No. 51591, 
U. S. Nat. Mus. 
Length of head from tip of snout to front of gill-slit 13 hundredths of total length ; greatest depth 
of body 10; distance from tip of snout to front of dorsal 30; distance from tip of snout to front of anal 
28; to upper axil of pectoral 14; distance from tip of snout to upper axil of pectoral exceeding the dis- 
tance from the latter to front of anal; dorsal beginning but little behind vent, everywhere lower than 
anal. Length of snout 36 hundredths of length of head; length of buccal cleft 65; diameter of eye 14; 
interorbital width opposite middle of eyes 22; depth of snout at front of orbit 28; greatest width of 
head 39; width of gill-slit 21; length of pectoral 53. 
Head slender, flattened above, its upper profile evenly curved, nuchal region not gibbous ; snout 
ending in a fleshy tip extending well beyond front of vomer and slightly beyond mandibular tip; front 
of vomer about opposite anterior nostril; posterior nostril a round pore with margins very slightly 
raised; anterior nostril a short tube directed forward; distance from posterior nostril to eye equaling 
one-third the interval between nostrils; mandibular teeth minute posteriorly, in a narrow band which 
narrows anteriorly to a single series of slightly enlarged teeth; maxillary teeth similar, in a wider 
band, which narrows anteriorly, but not to a single series, the inner row of teeth becoming anteriorly 
somewhat larger than the others; a prominent elliptical patch of teeth on head of vomer, those on 
median line a little laiger than any other teeth in mouth; a single series of small conical teeth along 
shaft of vomer. 
Scales narrowly elliptical, arranged in groups with their axes at right angles to each other, absent 
on fins, snout, and under side of head; lateral line prominent, opening by small pores arranged princi- 
pally along its lower margin, each pore with raised margins; lateral line nearer the dorsal than the 
ventral outline, until it approaches within less than a head’s length of the tip of tail. 
Color, warm brown, darker on fins and under side- of head; fins all distinctly white-margined; 
buccal and gill-cavities, and body cavity lined with blackish membrane. 
In the 2 smallest specimens, 19 and 36 cm. long, the body and fins are much lighter in color, the 
fins almost perfectly translucent in the smallest. In both, the caudal and the posterior part of dorsal 
and anal are jet-black, without white edging. The origin of the dorsal varies somewhat in position, 
but is a little in advance of the anal in only one specimen. 
Most nearly related to S'. pinnatus (Gronow) and S. affinis Gunther, differing in the much shorter 
trunk, and in the white margins of the fins. Examples were taken at the following stations: Nos. 
3979, vicinity of Bird Island, 222 to 387 fathoms; 4019, vicinity of Kauai, 409 to 550 fathoms; 4123, off 
the southwest coast of Oahu, 352 to 357 fathoms; 4137, off the southwest coast of Oahu, 411 to 476 
fathoms; 4166, vicinity of Bird Island, 293 to 800 fathoms. 
