MAUIiOLlCUS OCULATUS. 241 



Maurolicus oculatus sp. n, 



Plate LIII. fig. 3. 



Br. r. 9 ; D. 6 ; A. 24 ; V. 6 ; P. 17. 



In some degree the outlines of this species resemble those of ' F. sidlahis ; 

 distingnishing- features are patent in the proniinence and greater convexity 

 of the chest below the mouth, in the sliorter body cavity, in the lonc-er 

 caudal section, in the anterior position and the shortness of the dorsal fin, 

 in the dentition, and in the arrangement of the light organs. 



Form elongate, compressed, greatest depth near the head about one 

 fifth of the total length, body taperhig gradually from the pectorals to the 

 caudal fin, body cavity in the anterior third of the total. Head compressed, 

 width nearly half of either length or depth, descending slightly on the top 

 from the nape to the snout, strongly curved forward and upward from the 

 pectorals in the lower outline. Snout as long as the eye, vertically sub- 

 truncate as seen from the side, ending in a point less than a right angle 

 as viewed from above, tip formed by the symphyseal angle of the very 

 prominent lower jaws. Chin very steep, bearing a glandular mass (possibly 

 luminous) in front immediately below the symphysis. Mouth oblique, cleft 

 hardly extending below the eye, corner of the angular lying below the 

 anterior fourth of the orbit ; interniaxillaries short ; maxillaries of medium 

 length, much expanded, reaching down along the sides of the dentaries in 

 a broad curve below the greater portion of the orbit, not extending as far 

 as the back of the eye. Teeth very small, close together and nearly regular 

 in size in the mouth, but a great deal larger and irregular in sizes and spaces 

 on the lower edge of the expanded portion of the maxillary at the sides of 

 the head. Eye large, nearly two fifths of the length of the head ; interor- 

 bital space very narrow. Nostrils small, close together, nearer to the orbit 

 than to the mouth. Opercles thin, broad, reaching backward of the bases 

 of the pectorals. 



Dorsal fin short, base entirely forward of the anal, origin at the end of 

 the anterior third of the entire length. Anal long, origin little backward 

 of the base of the dorsal, end of base one ocular diameter from the long 

 rays of the caudal. Ventrals small, reaching the anal. Pectorals long, 

 reaching beyond the bases of the ventrals, rather low on the sides of the 

 body. Caudal comparatively large, notched ; pedicel moderately strong, j 



