162 



All these luminous organs are divided into two by a black septum. 



A large whitish, gland on the snout immediately in front of the eye. 



A mature female is nearly 5- inches long. 



Andaman Sea, 188 to 220 fathoms. 



Regd. Nos. 13127, 13128. 



Distribution : off Philippine Is. ; Andaman Sea. 



130. ScopelUS DumerilU, Bleeker. 



Scopelus Dumerilii, Bleeker, Act. Soo. Sc. Indo-Neerl. i. Manado and Macassar, p. 66 : Giinther, Cat. Fishes, 

 V. p. 410, and Challenger Deep Sea Fishes, p. 198. 



D. 14-15. A. 14-15. P. 10. V. 9. L. lat. 37. 



Very closely related to Scopelus engraulis, from which it only differs in the 

 following characters : — 



The eye is larger, its diameter being from a third to two-sevenths the length 

 of the head and equal to the width of the interorbital space. 



The first dorsal ray is rather nearer to the adipose fin than to the end of the 

 snout. 



The pectoral fin reaches somewhat beyond the root of the ventral, and the 

 latter reaches beyond the vent. 



The luminous organs correspond with those of S. engraulis, except that the 

 uppermost tier of four distant organs are placed much higher up, the last two 

 (which correspond respectively with the first and last anal rays) being on the 

 lateral line. 



None of the luminous organs have a median black septum ; and the large 

 glandular body in front of the eye is much brighter. 



A specimen nearly 3 inches long, from off the Malabar coast, 172 fathoms. 



Regd. No. 13730. 



Distribution : East Indian Archipelago ; Fiji ; Arabian Sea. 



131. Scopelus pterotus, Alcock. 



Scopelus {Myctophum) pterotus, Alcock, Ann. Mag. Nat. Hist., Sept. 1890, p. 217 : Illustrations of the 

 Zoology of the Investigator, Fishes, pl. IX. fig. 3. 



D. 11-12. A. 17. P. 15. V. 8. L. lat. circ. 30. 



Length of the head about a third, greatest height of the body about a fourth 

 the total without the caudal. Snout obtuse, its length hardly half the diameter 

 of the eye, which is a third the length of the head and rather more than the 

 mean width of the interorbital space. 



