R. COLLETT. [No. 9. 



Colour dark brown, the fins blackish. 

 Hab. Faroe Channel; Faroe Bank. Depth 750— 1200 metres. 

 Temperature at the bottom about -j- 7° C. 



Halargyreus affinis, n. sp. 



Distinguished from H. brevipes, Vaill. 1888, (from Morocco) 1 

 chiefly by the greater height of the body, and by the Ist dorsal 

 and the ventrals being produced into a fine filament; from 

 H. johnsonii, Gunth. 1862 (from Madeira, etc.) 2 by the longer 

 lower jaw, and the skorter head as compared with the distance 

 from the ventrals to the vent. 



Di eign. Lower jaw the longer; the length of the head is 

 contained 4V* times in the total length, and is less than the 

 distance from the ventrals to the vent. 



The height of the body is contained about 6V'2 times in 

 the total length ; the vent is midway between the tip of the snout 

 and the base of the caudal. 



The eye is contained about 3.8 times in the length of the 

 head; maxillary extending to the vertical from the centre of the 

 orbita. 



Gill-rakers on Ist branchial arch longer than the lamellae 

 of the gills. 



Min ute teeth forming bands in upper and lower jaws; vomer 

 and palatine bones toothless. 



Ist dorsal long, its first ray ending in a fine filament; the 

 height of the fin is equal to the postorbital part of the head. 

 Ventrals very narrow, produced into a long filament; their length 

 about equalling the height of the body. 



1 Halargyreus brevipes, Vaill. Expéd. Scientif. Trav. Talism. 1880—83, 

 Poissons, p. 295, Pl. 25, Fig. 5 (Paris 1888). 



2 Halargyreus johnsonii, Gunth. Cat. Fishes Brit. Mus. Vol. IV, p. 342 

 (Lond. 1862). 



