71 
two-thirds of its length. Eye very large, reaching to the upper 
surface of the head, its diameter one-luilf the length of the head ; 
several tubular lobules border the eye posteriorly ; luminous 
organ partially free, reaching to behind the eye, and four-fifths 
of its diameter. Snout very short, convex, not projecting beyond 
the mouth. Interorbital space flat, broad, three-fourths of the 
diameter of the eye. Nostril large, not separated from the 
eye by an osseous interspace. Jaws equal ; maxilla slender 
anteriorly, becoming abruptly expanded in its posterior third, 
and reaching to behind the vertical from the centre of the eye. 
All the bones of the head entire, scaleless, and finely sculptured; 
on the upper surface most of the bones are divided by naked 
tubiferous interspaces ; clavicle very large, semicircular ; 
supraclavicle and post-temporal elongate, arcuate. Bands of 
vi lliform teeth on the jaws and palatine bones ; vomer and 
tongue toothless. Dorsal spines weak, the last small, and 
separated from the fourth by a considerable interspace ;* soft 
dorsal rather higher than the spinous, with a distinct, though 
small and weak, spine : anal similar to soft dorsal, with two 
small inconspicuous spines : ventrals well developed, four- 
sevenths of the length of the head, and five-sevenths of the 
distance between their origin and the vent : pectorals pointed, 
equal in length to the ventrals : caudal elongate, and deeply 
forked, four and four-fifths in the total length. Least height 
of caudal pedicle three and two-thirds in the height of the body. 
Abdomen with a distinct serrated ridge. Scalesf small, each 
one with several rows of strong, though minute, spines, those 
on the posterior margin being the longest ; base of caudal fin 
scaly. The lateral line commences near the upper angle of 
the post-temporal, and runs parallel to the dorsal profile during 
its entire length.} Colors — Purplish-brown ; luminous organ 
externally bright yellow with a raised black border, internally 
black : all the fins much darker than the body : soft dorsal 
with a white basal band gradually narrowing from the front ; 
all the vertical fins narrowly margined with white. 
* The fifth spine has by some chance been omitted in the otherwise 
excellent figure in the Fische dkr Sudsee. 
f The scales have a great resemblance individually to those of Tetra- 
gonurus. 
J In Dr. Gunther’s figure this line is much too straight and commences 
too far down j Dr. lileeker’s is more accurate. 
