63 



Soft dorsal and anal short. 



Two gills (on the 2nd and 3rd branchial arches). No pseudobranchiaj. 



No air-bladder : no pyloric appendages. 



Distribution : West Indies and Atlantic coasts of the United States : Cape 

 Verde and neighbouring coasts of Africa : Ai-abian Sea, Bay of Bengal, Anda- 

 man Sea. At moderate depths. 



42. Dihranchiis nasutus, Alcock. 



Dihranchus nasutus, Alcock, Ann. Mag. Nat. Hist, July 1891, p. 24, pi. vii. fig. 1 : Tllostrations of thk 

 Zoology of the Investigator, Pishes, pl. XX. fig. 2. 



B. 6. D. 6. A. 4. C. 9. P. 12-13. V. 1. 5. 



Disk, measured to the gill-opening, shorter than the tail (including caudal), 

 its cranial portion very slightly elevated. 



The frontal bridge projects considerably beyond the mouth, formino- a 

 snout. 



The rostral tentacle ends in a pair of fleshy balls, with a pair of filaments 

 above and between them. 



Byes about one-sixth the length of the disk and not much more than one 

 diameter apart anteriorly. 



Dorsal surface closely covered with rigid spines having a stelliform base : 

 ventral surface much more sparsely beset with similar but smaller spines or 

 acute tubercles. 



Dorsal fin in the anterior half of the tail, but some distance behind the jrill- 

 opening : anal fin entirely behind the dorsal. 



Caudal fin 4<^ in the total length, equal to the pectorals. Ventrals narrow, 



nearly as long as the pectorals. 



Colour in Hfe, blue black to jet black. 



The largest specimen is not quite 3^ inches long. 



Andaman Sea, 188 to 220 and 40-5 fathoms : off Travancore coast, 406 

 fathoms. 



Kegd. Nos. 13028, 14116-14118, ij!. 



43. DlbrancJius niicropiis, Alcock. 



Dibroncfiits micropus, Alcoct, Ann. Mag. Nat. Hist., July 1891, p. 25, pi. vii. figs. 2,2a, 26,: Ilu'stratio.ns 

 OF THE Zoology of the Investigator, Fishes, pl. XX. fig. 1. • 



B. 6. D. 5. A. 4. C. 9. P. 15. V. 5. 



Disk as long as, or longer than, the tail, its cranial portion very decidedly 

 elevated. 



