323 DISCOVERY REPORTS 



forming a straight line; the interspace between first and second greater than that be- 

 tween second and third. AO 17-18, none elevated, 3 or 4 behind last anal ray. No Pol. 

 2 Pre, close together, second scarcely elevated. 6 or 7 luminous scales on upper edge of 

 caudal peduncle {(S) or 4 or 5 on lower edge ($). Uniformly silvery. 

 Described from nine specimens, 35 to 69 mm. in length. 



Fig. 27. Myctophuni tenisoni. Holotype. (x ij.) 



Hab. Southern Atlantic (south of 46°) ; Antarctic. 



Named for Lieut. -Col. W. P. C. Tenison, D.S.O., who is responsible for the illustra- 

 tions in the text of this report. 



Myctophum antarcticum (Giinther)'. 



Scopelus antarcticus, Giinther, 1878, Ann. Mag. Nat. Hist. (5), 11, p. 184; 1887, Deep-Sea Fish. 



'Challenger', p. 196, pi. li, fig. D. 



Myctophum antarcticum, Lonnberg, 1905, Wiss. Ergebn. Schwed. Siidpolar-Exped. v (6), p. 60; 



Roule, igi2. Deux. Exped. Antarct. Franf. (1908-10), Fish. p. 20; Regan, 1913, Trans. R. Soc. 



Edinburgh, XLix, p. 234; 1916, Larval Fishes ' Terra Nova', p. 127, pi. i, figs. 1-3; Parr, 1928, 



t.c. p. 58. 



Myctophum (Myctophum) antarcticum, Brauer, 1906, t.c. p. 168, fig. 82; Pappenheim, 1914, 



Deutsche Siidpolar-Exped. xv, Zool. vii (2), p. 192; Barnard, 1925, Ann. S. Afric. Mus. xxi, 



p. 240. 



St. 114. 12. xi. 26. 52° 25' 00" S, 9° 50' 00" E. 4^ m. net, horizontal, 650-700 (-0) m. : 19 

 specimens, 14-80 mm. 



St. 116. 14. xi. 26. 54° 30' 00" S, 5° 34' 00" E. 70 cm. tow-net, horizontal, 139 m. : i specimen, 

 70 mm. 



St. 121. 25. xi. 26. 50° 59' 00" S, 11° 44' 00" W. I m. tow-net, horizontal, 58 m. : i specimen, 

 50 mm. 



St. 197. 3. iv. 27. Bransfield Strait, South Shetlands, 62° 27' 00" S, 58° 11' 30" W. i m. tow- 

 net, horizontal, 134 m. : i specimen, 78 mm. 



St. 202. 5. iv. 27. Bransfield Strait, South Shetlands, 62° 48' 00" S, 60° 05' 00" W. i m. tow-net, 

 horizontal, 188 (-0) m. : i specimen, 95 mm. 



St. 267. 23. vii. 27. 24° 31' 00" S, 12° 15' 30" E. I m. tow-net, oblique, 117 (-0) m. : i specimen, 

 21 mm. 



St. WS 30. 19. xii. 26. 53° 34' 15" S, 38° 36' 15" W. I m. tow-net, horizontal, 134 (-67) m. : i 

 specimen, 65 mm. 



Depth of body 3I to 4^ in the length, length of head 3I to nearly 4. Diameter of eye 

 2^ to nearly 3 in length of head (in specimens over 60 mm.). Posterior margin of 



