HARPAGIFERIDAE 49 



Marguerite Bay, 230 metres^. In all these specimens the barbel is simple. Of the 

 7 specimens, 100 to 137 mm. in total length, taken by the 'Aurora' at Queen Mary 

 Land, 610 to 670 metres, some have a simple barbel, but in others this has a distal 

 expansion. In the specimen obtained by the Discovery Committee, which I have 

 ascertained is a female, the barbel is simple. Thus, it appears probable that this is a 

 secondary sexual character as in Artedidraco mirus. 



Genus HISTIODRACO 



Histiodraco, Regan, 1914, Rep. Brit. Antarct. {'Terra Nova') Exped. 1910, Zool. i (i), p. 9. 

 Type Dolloidraco velifer, Regan. 



Differs from Dolloidraco in that the upper limb of the post-temporal projects as a 

 prominent curved ridge. 

 A single species. 

 Coasts of the Antarctic Continent. 



Histiodraco velifer (Regan). 



Dolloidraco velifer, Regan, 1914, Ann. Mag. Nat. Hist., (8) xin, p. 12. 



Histiodraco velifer, Regan, 1914, Rep. Brit. Antarct. {'Terra Nova') Exped. 1910, Zool. i (i), 

 p. 9, pi. V, fig. 3 ; Norman, 1937, Rep. B.A.N.Z. Antarct. Res. Exped., Ser. B, i, p. 74. 



Depth of body 4 to 4I in the length, length of head 2| to af. Diameter of eye 3 J 

 to 3f, interorbital width about 12 in length of head. Maxillary extending to below 

 middle of eye or beyond ; lower jaw rather strongly projecting ; barbel f to more than J 

 length of head, fringed in its distal half; 7 very short, knob-like gill-rakers on lower 

 part of anterior arch. Dorsal II-III, 26; spinous dorsal short and high; soft dorsal 

 sometimes more or less elevated anteriorly, the highest rays f to ^ length of head. 

 Anal 17. Pectoral with 18 or 19 rays, about | length of head, longer than pelvics, which 

 do not reach vent. Caudal truncate above, rounded below. Body marbled or irregularly 

 barred with darker brown ; fins more or less spotted ; a dark bar at base of pectoral and 

 another across the caudal. 



Fig. 29. Histiodraco velifer. x |. 



Hab. Mac- Robertson Land; South Victoria Land. 



The types, 2 specimens 180 and 190 mm. in total length, are from the entrance to 

 McMurdo Sound, 77° 13' S, 164° 18' E, at a depth of 385 metres. Two other examples 



1 I have seen 4 types in the Paris Museum (No. 13 — 187-190), 100 to 120 mm. in total length. 



