Faukan — Seventh Report on the Fishes of the Irish Atlantic Slope. 109 



Coelorhynchus labiatus (Koehler). 



Macrurus labiatus, Koehler (1896), Holt and Byrne (1910). 

 Macrurus jajjoniciis, Vaillant (1888). 



Mucrurus Talismani, ("ollett (1905), Murray and Hjort (1912). 

 Goelorhynchm Vaillanti,\iov\\Q (1919). 



(Plate VII, fig. 6.) 



Fig. 5. — Coelorhynchus labiatus (after Vaillant). 



Description. — Head pointed, with long sub-trihedral depressed snout, 

 which measures from If times to nearly twice the length of the eye. Head 

 ridges well marked, the most prominent being the infra-orbital, which runs 

 backwards from the tip of the snout almost to the hind edge of the 

 preopercular, dividing the lower surface from the rest of the head. The 

 posterior portion of this ridge is composed, as is the ease in many Macrurids, 

 of a double series of spinose scutes, the anterior portion, from the centre of 

 the eye to the tip of the snout, consisting of a single series. The other 

 ridges present are : a supra- orbital, running from the back of the head above 

 the eye and nostril, in front of which it terminates ; an occipital, running 

 forward from the back of the head, and terminating above the eye close to 

 the orbital ridge, and a median (unpaired) from the anterior inter-orbital 

 region to the tip of the snout. All these ridges are marked with backward- 

 sloping spinules, in groups of three to five. The scales clothing the areas 

 between the ridges are, in small specimens, small and separated by 

 membranous skin, but in larger sizes they are larger, and form a continuous 

 covering. They bear a few small spinules each. The underside of the 

 head is smooth and scaleless, or with a few small spinules near the tip of the 

 snout or along its margin. It often bears several small soft papillae. 

 The mouth is small and of an elongated horseshoe shape. It is situated in 

 the centre of the underside of the head, and is separated from the suborbital 

 ridge by a distance nearly equal to half the diameter of the eye. Body very 



[Q 21 



