. Fig. 36. Racovitsia harrissoni. x|. Genus PRIONODRACO Prionodraco, Regan, 1914, Ann. Mag. Nat. Hist., (8) xni, p. 13; 1914, Rep. Brit. Antarct. {'Terra Nova') Exped. 1910, Zool. i (i), p. 10. Type Prionodraco evansii, Regan. Body elongate, compressed, quadrangular, with a series of V-shaped, serrated, bony plates at each angle; each plate with a backwardly directed spine; lower series of plates ending in a group of nearly normal serrated scales behind pectoral fin; usually a series of similar scales along middle of side; body otherwise naked. Lateral line single, in- complete. Snout spatulat
. Fig. 36. Racovitsia harrissoni. x|. Genus PRIONODRACO Prionodraco, Regan, 1914, Ann. Mag. Nat. Hist., (8) xni, p. 13; 1914, Rep. Brit. Antarct. {'Terra Nova') Exped. 1910, Zool. i (i), p. 10. Type Prionodraco evansii, Regan. Body elongate, compressed, quadrangular, with a series of V-shaped, serrated, bony plates at each angle; each plate with a backwardly directed spine; lower series of plates ending in a group of nearly normal serrated scales behind pectoral fin; usually a series of similar scales along middle of side; body otherwise naked. Lateral line single, in- complete. Snout spatulate; mouth slightly protractile; teeth small, villiform, in bands. Operculum hooked upwards posteriorly, its upper edge deeply concave; gill-membranes narrowly united to the isthmus anteriorly. Vertebrae 50 (16 + 34). A single species. Coasts of the Antarctic Continent. Prionodraco evansii, Regan. Prionodraco evansii, Regan, 1914, , p. 13; 1914, , p. 10, pi. vii, fig. i; Waite, 1916, Austral. Antarct. Exped. Sci. Rep., Ser. C, ni (i), Fishes, p. 35; Norman, 1937, Rep. Antarct. Res. Exped., Ser. B, i, p. 75. St. 167. 20. ii. 27. Off Signy Island, South Orkneys. Net (7 mm. mesh) attached to back of trawl, 244-344 "^•- 3° specimens, 65-162 mm. Depth of body 7 to 8 in the length, length of head 3 to 3|. Snout as long as or a little longer than eye, diameter of which is 3 to 3Mn length of head; interorbital width 14 to 16. Lower jaw a little projecting; maxillary extending to or nearly to level of anterior margin of eye; cheeks and opercles entirely naked; 15 to 18 gill-rakers on lower part of anterior arch. About 50 plates in the upper series; 12 to 17 tubular scales in
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