120 



Andaman Sea, 188 to 220, 265, and 370 to 419 fathoms : Arabian Sea, be- 

 tween the Maldives and Cape Comorin, 719 fathoms. 



Kegd. Nos. 13116, 13517, ~, ^. 



Distribution : off the coast of Brazil ; North Sea, Bay of Biscay, Madeira 

 and North Atlantic ; Mediterranean ( ? ) ; Arabian Sea, Andaman Sea, HaAvaii 

 (Sandwich Is.). 



I have compared our specimens with the figures and descriptions given by 

 Giinther and by the authors of the History of Scandinavian Fishes, and I am 

 perfectly sure that they are one and the same species. 



Bathygadus, Gimther. 



Bathygadus, Giiuther, Ann. Mag. Nat. Hist., II. 1878, p. 23 : Challenger Deep-Sea Fislies, p. 151 : Goode and 

 Bean, Oceanic Ichthyology, p. 420: Jordan and Evermann, Fishes N. America, III. p. 2563. 



Head short and thick with the muciferous cavities well developed : tail long 

 and tapering. 



Snout not projecting beyond the mouth, which is large and lateral, with the 

 jaws even in front. VilHform teeth in narrow bands in the jaws only. Barbel 

 jH'esent or absent. 



Gill-openings wide, the gill-membranes slightly united in front. No mem- 

 branous connexion or diaphragm between the first branchial arch and the wall of 

 the gill-chamber. Numerous long setiform gill-rakers on the outer side of the 

 first branchial arch. 



Scales small, deciduous, cycloid. 



Second dorsal fin almost continuous with the first, its rays are well 

 developed. Anal rays feeble. Ventrals arising below the pectorals. 



Key to the Indian species of Bathygadus. 



I. Barbel present : anterior dorsal, upper pectoral and outer vential rays 



very greatly prolonged ... ... ... ... B. longifilis. 



II. No barbel : anterior dorsal, upper pectoral and outer ventral rays 



slightly prolonged ... ... ... ... ... B. furvescens. 



98. Bathygadus longifilis, Goode & Bean. 



Bathygadus longifilis, Goode and Bean, Proc. U. S. Nat. Mas. VIII. 1885, p. 599, and Oceanic Ichthyology, 

 1896, p. 422 : Gunther, Challenger Deep-Sea Fishes, p. 157 : Alcock, Ann. Mag. Nat. Hist. (6) VI. 1890, p 302 and 

 VIII. 1891, p. 123. 



Bathygadus muUifilis, Giinther, Challenger Deep-Sea Fishes, p. 155. 



Hymenocephalus longifilis, Vaillant, Exp. Sci. Travaillenr et Talisman, Poiss. p. 218, pi. xxiii. fig 1. 



B. 7. D. r -I- 10 + rar. 140. P. 13-15. V. 8. 



Head and body compressed. Head about a sixth the total length : greatest 

 height of the body about equal to the length of the head behind the anterior nostril. 



