169 
There are 8 or g fang-like depressible teeth in the upper and 
lower jaw, but none in the palate. The barbel is very long 
(207 mm.), being Iy’5 in the length of the body. In contra- 
distinction to the intense black of the body it is colourless 
except that, at intervals, black bodies may be seen through the 
colourless skin. There are, moreover, a series of minute black 
dots along the ventral side of the barbel for about § of its length, 
where a number of filaments originate. 
There are on the dorsal side 2 long filaments (34 mm.), end- 
ing in minute bulbs at the tips; between this there is a thick 
filament, not so long (10 mm.), also ending in a bulb which has, 
however, a short hair-like prolongation. About the middle of 
this median filament there are two much finer filaments, also 
ending in bulbs. A little behind the origin of these, the main 
barbel, shows a slight swelling, and this was observed to be 
luminous. Toward the end of the barbel the dark patches 
show through the colourless skin as a series of beads. The 
extremity of the barbel is characterised by a clump of bulbous 
expansions, observed to be luminous, and a number of filaments 
with bead-like swellings. 
Luminous organs. There were none to be observed in the 
head region except those at the base of each of the branchios- 
tegals. Two rows commence immediately behind the barbel, 
running backward between the pectorals and ventrals at inter- 
vals about equal to 3 the diameter of the eye, about 67 pairs 
in all. There are two other rows parallel to these, commencing 
behind the opercular opening and running along the sides of 
the body outside the pectorals and ventrals till they reach 
about the 11th ray of the anal, where they join the ventral 
series. In addition to this there is a sprinkling of very minute 
spots over the ventral surface of the body, most marked in the 
neighbourhood of the larger luminous spots. 
The dorsal begins far back, the distance between its com- 
mencement and the caudal being + of the total length; it 
ends near the caudal, its total length being about the length 
of the head. The anal is longer, its centre being nearly under 
the commencement of the dorsal. The pectorals are reduced 
(apparently) to single filaments, and are about 14 in the depth 
of the body. The ventrals have 7 rays and are slightly longer 
than pectorals. None of the rays are prolonged, but their tips 
are filamentous. 
One specimen, procured off Cape Point (E.N.E., 364 miles), 
from a depth of 660 fathoms. Reference No. 17,791. 
