240 DEEP SEA FISHES. 
length of head nearly equalling one fourth of the total length ; body cavity 
hardly half the length from the snout to the base of the caudal. Head 
short, as deep as long, narrow, one third as wide as deep. Snout shorter 
than the eye; tip forward of the middle of the eye and formed by the 
prominent symphyseal angle of the lower jaws. Chin forming a broad 
and almost regular curve forward and upward from the throat to the 
end of the snout. Mouth wide, oblique; a short portion of its border 
formed by the intermaxillaries; maxillaries broadly expanded and curved 
so as to pass outside of and to cover the greater portions of the lower jaws, 
furnished with teeth along the entire lower edges, reaching as far backward 
as the hinder border of the orbit, rounded on the posterior extremity. 
Teeth very small, acuminate, irregular, Nostrils minute, close together, 
near the orbit. 
Dorsal origin very little forward of the middle of the distance from the 
snout to the caudal base. Anal origin opposite that of the dorsal; base 
extending within less than one ocular diameter of the caudal. Ventrals 
minute, near the vent, reaching the anal. Pectorals low on the sides, long, 
reaching the ventrals. Caudal moderately strong, notched. 
The light organs vary in size from comparatively large to very small ; 
they are distributed on each side about as follows: a series of six at the 
bases of the branchiostegal rays; a group of three on the isthmus, and 
between this and the shoulder a second group of four, each group in a large 
black mass with silvery lateral face ; a series from the isthmus to the vent 
of seventeen, followed between the ventrals and the anal by a group of 
four ; a group of three minute facets above the ninth, another group of four 
above the fifteenth, and a third group of three above the nineteenth anal 
ray; a group of several below the base of the tail; and a series of five 
larger ones from the shoulder backward. These luminous organs are larger 
below the belly and in the head; the circular facets are commonly directed 
down, and the side of the blotch in which they are seated most often bears 
a larger area of silvery. A large round spot of black, without silver, hes 
directly in front of the eye below the nostrils; and a row of seventeen 
dendritiform spots of black extends from the upper angle of the operculum 
to the tail along the lateral line, hindmost larger. 
Muscular areas light rusty brownish ; snout and fins whitish, back and 
lower portions of head and abdomen blackish. 
Number Latitude. Longitude. Depth. 
163, 30° 31’ 35” N. 140° 5’ 30” W. 300 fathoms. 
