. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 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 H
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 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. 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 Fig. 29. Histiodraco velifer.
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