PBDICULATI. 



473 



This is anotlier deep-sea form, hitherto found in very few 

 examples in the Arctic and Mid-Atlantic Oceans. The 

 single tentacle is beset with many long filaments at its 

 extremity, thus answering the same purpose which is attained 

 by a greater number of tentacles. Deep black, 



Melanocetus. — Head and body compressed; head very large ; 

 cleft of the mouth exceedingly wide, vertical. Eyes very small. 



Fig. 211. — Melanocetus johnsonii. 



Teeth of the jaws and vomer rasp-like, depressible. Skin smooth. 

 The spinous dorsal is reduced to a single filament placed on the 

 head. The soft dorsal and anal short. Ventrals none. 



Two species are known from the Atlantic : M. his;pinossus 

 and M. johnsonii, obtained at depths of from 360 to 1800 

 fathoms. The specimen figured was not quite four inches 

 long, and contained in its stomach, rolled up spirally into a 

 ball, a Scopeline fish which measured 7^ inches in length 

 and one inch ia depth. 



Oneieodes. — A deep-sea fish from the Arctic Ocean, differing 

 from the preceding in possessing a second isolated dorsal ray 

 on the back. 



Antennarius. — Head very large, high, compressed ; cleft of 

 the mouth vertical or sub-vertical, of moderate width. Jaws 

 and palate armed with rasp-like teeth. Eye small. Body naked 



