art. 3. NEW SPECIES OF FISH-—WELSH. Jil 
lower jaw included; maxillary 1.04, extending about 8 eye diameters 
behind vertical from posterior margin of eye; barbel very long, fila- 
mentous, its base directly under eye (apparently incomplete in all the 
examples, in one of which it is 14 times length of body without 
caudal); teeth in both jaws in a single row, canine, of unequal length, 
the longer teeth in upper jaw projecting when mouth is closed; tongue 
with two groups of strong retrorse teeth; palatines with two small 
teeth each; vomer toothless; interorbital 2.65, convex; body scale- 
less. 
An ovoid light organ close to maxillary behind vertical from pos- 
terior margin of eye, contiguous with which is an oblong organ on 
upper edge of maxillary; a row of indistinct glandular organs on 
sides of snout and cheeks; two rows of small, elongated photophores 
on sides ventrally, about 30 in each from gill opening to anal; a 
single row of somewhat larger photophores above anal, extending to 
end of caudal peduncle. 
Dorsal origin three rays in advance of that of anal; distance from 
tip of snout to origin of dorsal 1.16, to ventral 1.89, caudal 1.46 in 
Fic. 10.—TRICHOSTOMIAS METALLICUS, NEW SPECIES. 
head, its lower lobe much the longer; ventrals 2.80, the rays hairlike, 
separate throughout their length; pectorals 3.50, the first two rays 
slender, united at base, filamentous, the third ray stouter, bristlelike, 
its base an eye diameter behind that of the other two, all three rays 
of about equal length. 
Color in alcohol, head and body dark greenish bronze with bright 
metallic reflections, thickly strewn with minute white dots bordered 
with black pigment; top of head, margin of opercular flap, and photo- 
phores, black; all fins unpigmented, barbel white, speckled with 
minute black chromatophores. 
Type.—Cat. No. 84294, U.S.N.M., 40 mm. long, taken in a townet 
at Station 10169, 270 miles from Cape Hatteras, at a depth of from 
50 to 0 meters. 
(metallicus, metallic). 
