143 



(3) 12 or 13 between the tip of the isthmus and the base of the pectoral : 



(4) eight between the pectoral and the ventral: 



(5) eight between the ventral and the anal : 



(6) 15 along the bases of the anal rays : 



(7) eight between the anal and the caudal. 

 The above form the lowermost tier. 



The upper tier consists of 17 between the gill-opening and the level of the 

 anal fin, where it stops. 



In addition, there are some luminous organs on the head, notably one at the 

 anterior angle of the orbit. 



Length 5 inches. 



Andaman Sea, 185, 188 to 220, and 405 fathoms. 



Regd. Nos. 13076, 13077, ^ x -f°, ^, ^. 



Chauliodus, Bl. Schn. 



Chauliodus, Schneider, Bioch, Syst. Ichth. p. 430: Gilnther, Cat. Fishes, V., p. 392: Goode and Bean, Oceanic 

 Ichthyology, p. 96: Jordan and Evermann, Fishes N. Amer., p. 585. 



Body elongate, compressed, covered with exceedingly thin and deciduous 

 scales. Head elevated, compressed, with the bones thin but ossified, and the 

 gill-cover very narrow. Series of luminous spots along the ventral aspect of the 

 body from the chin to the caudal fin. Cleft of the mouth extremely wide, the 

 upper jaw, about half of the edge of which is formed by the premaxilla, reaching 

 almost to the angle of the preoperculum ; the mandible projecting. About four 

 enormous fangs in each premaxilla, and about five fangs, the anterior one of 

 which is more than half the length of the head, in the mandible : none of these 

 fano-s are received within the mouth. Edge of maxilla finely denticulated : 

 palatine with a single series of small teeth : no teeth on the tongue. Eye of 

 moderate size. 



Gill-opening very wide : no gill-rakers : no pseudobranchiaj. Branchioste- 

 gals numerous. 



Dorsal fin short, placed far forwards on the body, hardly a head-length 

 behind the head. Anal fin also short, placed far back near the caudal. Caudal 

 forked. Adipose dorsal small, opposite the anal. Pectorals and ventrals well, 

 developed, the ventrals long. 



A long slender thin-walled air-bladder. 



Distribution : Atlantic, Mediterranean, Arabian Sea and Bay of Bengal, 

 Western Pacific. 



