306 A. Alcock — Supplementary List of Indian Fishes. [No. 3, 



The length of the snout — i.e., of the space between the front wall of the 

 lower orbit and the tip of the knob of the mandibular symphysis— is 

 less than one- third the length of the eye. 



The body, and the head excepting only the snout and gill-mem- 

 branes, are covered with scales. 



The rays of the vertical fins are stout, the longest are more than 

 two-fifths the greatest body-height. The caudal is large, with a distinct 

 though broad peduncle. 



The coloured pectoral is rather longer than its fellow, the latter 

 being half the length of the head. The coloured ventral is rather 

 longer than its fellow, the latter being as long as the eye. 



Colours in spirit : right side blackish-brown, with traces of six 

 opalescent cross-bands : irides and coloured pectoral fin blue-black, the 

 pectoral with a narrow white cross-stripe. Vertical fins (on coloured 

 side), and right ventral, almost black, tipped with milk white. Left 

 side rather dusky. 



Length 6*25 inches. 



Off Colombo, 180-217 fms. 



Fam. Scopelidae. 



7. ■\ Bathypterois atricolor, n. sp. 



B. 13. D. 15. A. 10. P. 2/10. Y. 9. L. lat. 52. L. tr. 15. 



Length of head a little more than one-fifth, height of body about 

 one-eighth, of total (without caudal). 



Length of snout a little more than one-third that of head, and a 

 little more than 5 times that of eye, equal to width of interorbital space. 



Few or no teeth on the vomer. 



The dorsal fin arises just behind the vertical through the base 

 of the ventrals, and nearly half its extent is in the anterior half of the 

 body (measured without caudal) : the anal arises just behind the level 

 of the last dorsal ray : the adipose fin is halfway between the end of 

 the dorsal and the base of the caudal : the lower caudal lobe is very 

 slightly prolonged. Upper two pectoral rays prolonged, coherent in 

 basal part but not fused : outer two ventral rays thickened, unbranched, 

 prolonged as far as 7th or 8th anal ray. 



Colours, uniform black, except the pectoral filaments. 



Laccadive Sea, 891 fms. 



Group Scopelarchina. 



ScoPELARCHUS, n. gen. 

 Body elongate compressed, covered with deciduous scales, the 

 scales, however, on the greater part of the lateral line being stout and 



t 111. Zool. Investigator, Fishes pi. xvii. fig. Q {in preparation). 



