new Fishes from the South-ioest Const of Iraland. 93 



Longtli of specimen 239 mm., 201 mm. without can lal 

 fill. 



Loc. S.E. 487, 3. ix. 07, 51° 36' N., 11° 57' W., 540-G60 

 fath.; trawl. 



The above diagnosis is based on a single specimen, which 

 has the following dimensions : — 



mm. 



Total length (with mouth closed) 239 



„ „ without jaws* or caudal fin 198 * 



Length of head without jaws * (55 * 



„ snout „ „ 15 * 



Horizontal diameter of orbit 29 



Vertical „ „ 23 



Interovbital breadth 22 



Vertical liei^ht of body at origin of dorsal .... 131 

 Distance from second dorsal to first anal spine . , 148 



Depth of caudal peduncle 15 



Width of head at gill-cover 3o 



„ caudal peduncle 10 



Length of second dorsal spine 81 



„ first anal ,, 31-5 



„ ventral „ 30 



Ceratiidae. 



Oneirodes megaceros, sp. n. 



Body ovoid and compressed, covered with smooth skin, its 

 greatest height about 1| in total length without caudal fin ; 

 belly tumid. Head very large, somewhat compressed, its 

 hmgth (to hind edge of gill-opening) about 12 in total length. 

 Frontal and mandibular spines well developed ; breadth of 

 liead between tips of former about twice and between tips 

 of latter about 1^ times in its length ; distance from tip of 

 frontal spine to tip of mandibular spine about l.V in length 

 of head. Snout blunt, lower jaw slightly projecting, gape 

 nearly horizontal. Eyes minute, lying vertically below 

 frontal s])ines. Teeth in jaws slender, curved, of unequal 

 size, and dejiressible ; a few similar teeth on either side of 

 vomer. Caudal peduncle very short, its height about 4 times 

 in length of head. D. T, I, 6 ; anterior spine situate far 

 forward on head and developed into a tentacle which is longer 

 than the head ; second spine vestigial and reduced to a small 

 tubercle midway between the anterior spine and the articu- 

 lated rays, which are feebly developed and opposite the anal. 

 A. 4, feebly developed. The tentacle is jointed at about | of 

 the distance from its origin to its tip, which is clavate and 

 bears on its upper edge anteriorly a short digitiform limb with 



* To include jaws (with mouth closed) 3 mm. should be added to 

 those measurements. 



