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 flicets are connnonly 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, lies 

 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 ai'oas 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. 



