87 



(11) The pectoral filaments are never as much as twice the length of the head. 



(12) The inner ray of the ventral fin is not half the length of the head. 

 Colours in spirit yellowish or sepia, fins dark grey. 



A mature female is only 6- inches long. 



Bay of Bengal, 193 and 281 to 2-58 fathoms : Andaman Sea, 271 fathoms. 



Kegd. Nos. 116^8, 11704, 11707, 11715-11717, 13166-13169. 



67. Dlcrolcne nigrlcaiidls, Alcock. 



Paradicrolene nigricaudis, Alcock, Ann. Mag. Nat. Hist., July 1S91, p. 30 : Illustration.s of the Zoology of 

 THE Investigator, Fishes, pl. II. fig. 4. 



D. circ. 90. A. circ. 75. P. 19-20/6-7. V. 2. 

 Differs from Dicrolene intronigra only in the following particulars : — 



(I) The length of the head is two-ninths of the total. 



(3) The length of the snout is quite equal to the width of the interorbital 

 space. 



(4) The major diameter of the eye is not quite two-ninths the length of the 

 head. 



(8) There are 30-31 rows of scales between the dorsal fin and the vent. 

 The lateral line is very distinct : it runs four scales below the first dorsal ray 

 and ends in the posterior fourth of the tail. 



(10) The distance between the first anal ray and the base of the pectoral 

 fin is equal to the length of the head. 



(II) The pectorals are as long as the postrostral portion of the head: their 

 free rays are connected with one another for a considerable distance, and with 

 the rest of the fin, by membrane, and are never more than 1^ times as lono- as 

 the head. 



(12) The inner ray of the ventral fin is equal in length to the postorbital 

 portion of the head. 



(13) The intestinal wall round the pylorus is puckered, but there are no 

 distinct cffical pouches. 



Colours in spirit, brown : the posterior third of the tail, including the cor- 

 responding parts of the dorsal and anal fins, is black : the caudal fin and pectoral 

 filaments are white. 



The largest specimen, which is not far off maturity, is a little over 8 inches 

 long. 



Andaman Sea, 188 to 220 fathoms : Arabian Sea, off Travancore coast, 224 

 to 284 fathoms. 



Regd. Nos. 13040, 13044, ^^^. 



