42 



DISCOVERY REPORTS 



meanings of the two words are quite different, Gill's genus being for a fish with 5 

 lateral lines on each side, Boulenger's for a fish believed to be without any lateral line. 

 Mr Whitley has also erected a new family (Gelididae) for its reception, pointing out 

 that Boulenger was in error in placing this fish in the family Leptoscopidae. Regan, 

 however, in his monograph of the Nototheniiformes published in 191 3, has clearly 

 demonstrated the close affinities of Pleuragramma and Trematomus. 



Pleuragramma antarcticum, Boulenger. 



Pleuragramma antarcticum, Boulenger, 1902, i.e., p. 187, pi. xviii; Lonnberg, 1905, Wiss. 

 Ergehn. Schwed. Sudpol.-Exped., V (6), p. 49; Vaillant, 1906, Bull. Mus. Paris, 1906, No. 3, 

 p. 139; 1906, Exped. Antarct. Frang. (1903-1905), Poiss., p. 48, figs. 3, 4; Boulenger, 

 1907, Nat. Antarct. Exped. Nat. Hist., 11, Fish., p. 4; Waite, 191 1, Brit. Antarct. Exped., 

 1907-1909, II, Biol., II, p. 14; Pappenheim, 1912, Deutsche Siidpol.-E.xped., xiii, Zool. v, 

 p. 164; Regan, 1913, Trans. R. Soc. Edinburgh, xlix, p. 264; 1914, Rep. Brit. Antarct. 

 (' Terra Nova') Exped. 1910, Zool. i (i), p. 6; 1916, ibid. Zool. i (4), p. 131, pi. ii, figs. 3-6; 

 Waite, 1916, Austral. Antarct. Exped. Sci. Rep., Ser. C, iii (i), Fishes, p. 22; Nichols and 

 LaMonte, 1936, Amer. Mus. Novit., 839, p. i ; Norman, 1937, Rep. B.A.N.Z. Antarct. Res. 

 Exped., Ser. B, i, p. 72. 



Gelidus antarcticus, Whitley, 1937, Rec Austral. Mus., xx, p. 20, fig. 5. 



St. 181. 12. iii. 27. Schollaert Channel, Palmer Archipelago. Nets (4 mm. and 7 mm. mesh) 

 attached to back of trawl, 160-335 m.: i specimen, 160 mm. 



St. 182. 14. iii. 27. Schollaert Channel, Palmer Archipelago. Large otter trawl, 278-500 m.: 

 I specimen, 200 mm. 



St. WS 506. 7. ii. 30. 70° 31' S, 81° 36' W. Picked up dead at surface: i specimen, 185 mm. 



St. — . 20.1.36. Bay of Whales (78° 24-85' 8, 164° 10-3' W). Picked up dead at surface: i 

 specimen, 173 mm. 



Fig. 26. Pleuragramma antarcticum. x ^. A, Lateral line scales (enlarged). 



Depth of body 5 to 6 in the length, length of head 3^^ to 4. Snout as long as or 

 longer than eye, diameter of which is 3 j to 4 in length of head ; interorbital width 5 to 6. 

 Maxillary extending to below anterior h of eye ; upper surface of head naked ; cheeks 

 and opercles scaly; 20 to 25 gill-rakers on lower part of anterior arch. 50 to 58 scales 

 in a longitudinal series from above base of pectoral to caudal ; about 45 notched scales 

 in upper lateral line, which ends below last rays of dorsal; about 35 in both middle 

 and lower lateral lines. Dorsal VI-VII, 33-38. Anal 36-39. Pectoral with 20 or 21 

 rays, i to | length of head, as long as or longer than pelvics, which scarcely reach the 



