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. Congroniurcena tnacrocercus, Alcock. 



Congromurtgna longicauda, Aloock, Anu. Mag. Nat. Hist., Dec. 1889, p. 455 (uame preocc.) : Illuktkation.s of 

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



Congromuriena macrocercus, Alcock, Joarn. As. Soo. Bengal, Vol. LXIII., pt. 2, 1894, p. 134. 

 Bcithycongrus macrocercus, Ogilby, loc. cit. sw^ira. 



Differs from C. sqmlicejys 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 ?k 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. Corigromtircena nasica, Alcock. 



Congromiiraina nasica, Alcock, Joarn. As. Soo. Bengal, Vol. LXII., pt. 2, 1893, p. 183 : Illustrations ok the 

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

 Bathyconyrus nasicas, Ogilby, loc. cit. supra. 



Differs from G. sqiialice^js 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. 



