272 DEEP SEA FISHES. 
Operculum thin, broad and short. Three pyloric ceca. Scale marks 
present, but the scales apparently reduced to membrane. 
Dorsal short; first ray probably long, at the end of the anterior fourth 
of the total length; base high forward, one third longer than the orbit. 
Adipose fin rather long; above the hinder half of the anal. Anal in the 
hindmost third of the length; base twice as long as that of the dorsal, 
separated from the bases of the longest rays of the caudal by about two 
thirds of the length of the head; fin deepest anteriorly. Caudal pedicel 
deepening toward the bases of the rays; fin deeply notched. Pectorals 
narrow, low on the side, not reaching the bases of the ventrals. Ventrals 
narrow, long, inserted about half way from the snout to the anal. 
In each of the branchiostegal series there are twenty of the luminous 
organs; at each side of the body the lower series of the light facets con- 
tains eight at the side of the isthmus, nineteen between the isthmus and 
the ventrals, twenty-two to twenty-three between the ventrals and the anal, 
and eleven from the origin of the anal to the base of the caudal; and in the 
upper series there are seventeen to nineteen from the gill opening to the 
ventrals and twenty-two to twenty-three from the ventrals to the anal. 
As in C. Sloani, there is a multitude of very small light organs, mere dots, 
but similar to the large ones, amongst those of the two main series; for 
instances, at each side of the bases of the pectorals in somewhat regular rows, 
or in the groups of four, more or less, between the large series. A single 
yellow (red) facet is situated between the eye and the hinder extremity of 
the intermaxillary, and a single black one immediately below the forward 
part of the eye (resembling that in Gonostoma). 
Black ; tinted with gold on the flank and iris, with red on the sides of 
the lower jaw and on the light facet back of the eye, and with greenish on 
the anterior glands of the two main series ; fins brownish to blackish. 
This species appears to be shorter and stouter than Chauliodus Sloan Bl. 
Schn., the barbel is more developed, and the luminous disks are not so 
numerous; from the shoulder to the vent in each of the upper series there 
are thirty-nine to forty light organs, of which seventeen are between the 
shoulder and the ventral, and in each of the lower series there are sixty to 
sixty-one, forty-nine of which are from the hyoid to the vent, or twenty- 
seven to twenty-eight of which are from the hyoid to the ventral; but in 
C. Sloani there are forty-four to forty-six from the shoulder to the vent, 
nineteen to twenty of which are between the shoulder and the ventral, in 
