CHAULIODUS BARBATUS. 271 
at 2575 fathoms, and north of New Guinea, at 2000 fathoms. By the 
“ Investigator,’ they were taken, in the Bay of Bengal, at 1590, and by the 
“ Albatross,” between Central America and the Galapagos Islands at 1201 
fathoms. Representatives were also taken south of New Guinea, by the 
“ Challenger,” at 800, off the coasts of Morocco, by the “ Talisman,” at 614, 
and by the ‘ Albatross,” off Alaska, at 876 fathoms. An apparently new 
species for which no definite depth is known is described below. The dis- 
tribution for the entire family, both horizontal and vertical is sufficiently 
apparent in the list of species. 
Chauliodus barbatus sp. n. | 
Plate K, fig. 2, 2a, 
Birree ee DMG AL I= 5s Ve is Pa I: 6 
Moderately elongate, compressed, greatest depth nearly one seventh and 
greatest width one eighteenth of the total length, tapering to a depth of one 
thirty-sixth and a width of half'as much in the caudal pedicel. Head short, 
as deep as long, profile slightly concave above the snout and indented at 
the end of the chin in front of the barbel, convex across the crown. Snout 
blunt, about twice as long as the eye, with an angular prominence at the 
symphysis of the lower jaws. Eye medium, two elevenths of the length of 
the head. Mouth large, lower jaws little shorter than the head, oblique, 
intermaxillaries forming more than half of the upper border. Teeth few 
large and fang-like on intermaxillaries and dentaries, numerous, small, 
comb-like and inclined backward on the maxillaries. On each intermaxil- 
lary there are four fangs, the longest twice the length of the eye. Not 
counting the very small one at the symphysis there are seven fangs on each 
lower jaw, the foremost half as long as the head and the others decreasing 
in size backwards. On each palatine there are two small widely separated 
teeth, and directed outward from the base of the largest fang in the upper 
jaw there is a single tooth. Nostrils small, close together, nearer to the 
upper part of the eye than to the end of the snout, anterior smaller. 
Barbel with a rigid cartilage, half as long as the eye, resting with the free 
end forward in the notch at the end of the chin where it is further pro- 
tected by the folds of the skin and the bones between which it lies. Gills 
four, a short slit behind the fourth; lamelle short; rakers obsolete; arches 
weak; openings very wide; membranes free, not united to the isthmus. 
