198 



hyaline. A very large air-bladder extending half a head-length beyond the vent. 

 Visceral peritoneum silvery. 



The largest specimen is 20 inches long. 

 Bay of Bengal, 128 and 195 to 210 fathoms. 

 Regd. Nos. 13693-13695, 13697, 13450. 



158. Congromurcena macrocercus, Alcock. 



Congromursena longicauda, Alcock, Ann. Mag. Nat. Hist., Dec. 1889, p. 455 (name preocc.) : Illustrations of 

 the Zoology of the Investigator, Fishes, pl. VII. fig. 5. 



Congromursena macrocercus, Alcock, Journ. As. Soc. Bengal, Vol. LXIII., pt. 2, 1894, p. 134. 

 Bathycongrus macrocercus, Ogilby, loc. cit. supra. 



Differs from G. squaliceps only in the following particulars : — 



The head, measured to the gill-opening, is an eye-length shorter than the 

 distance between the gill-opening and the vent, which is not quite a fourth the 

 length of the tail. 



The snout, which has the same form and the same relations to the mouth, is 

 a little more than a fourth the length of the head. 



The eye is very little more than half the length of the snout. 



The mouth-cleft reaches to the posterior border of the pupil. 



The dorsal fin begins above the gill-opening. 



The narrow pectorals are as long as the snout. 



Colour brown, the fins grey. 



Length 16 inches. 



Andaman Sea, 265 fathoms ; Bay of Bengal, 240 to 276 fathoms. 



Regd. Nos. 11781, 11782, 13452. 



159. Corigromurceim nasica, Alcock. 



Congromureena nasica, Alcock, Journ. As. Soc. Bengal, Vol. LXII., pt. 2, 1893, p. 183 : Illustrations of the 

 Zoology of the Investigator, Fishes, pl. IX. fig. 2. 

 Bathycongrus nasicus, Ogilby, loc. cit. supra. 



Differs from G. squaliceps only in the following particulars : — 



The head, measured to the gill-opening, is very slightly longer than the 

 distance between the gill-opening and the vent, which is considerably more than 

 a fourth (1 : about 3'4) the length of the tail. 



The snout is a little over a quarter the length of the head and is rather 

 sharp-pointed. 



The eye is not much more than half the length of the snout. 



