324 



DISCOVERY REPORTS 



SAO forming a much less obtuse angle than in M. antarcticiim. AO 15-16, forming a 

 continuous series in which three more or less distinct groups may be recognised; first 

 two nearer anal base than the remainder, 9 or 10 arranged in a slight ~-shaped curve, 

 and 4 behind the anal fin parallel with those of the opposite side. One to three luminous 

 scales on upper or lower edge of the caudal peduncle. 



Described from five specimens , 3 2 to 9 5 mm . in length , including the type of the species . 



Hab. South Atlantic; Antarctic; Tasmania; South Pacific. 



This species seems to have been confused with the preceding by some authors, and 

 some of the references given under M. antarcticiim may refer to M. subasperum. 



Fig. 29. Myctophum subasperum. (x i.) [Scale x 3.] 



Myctophum interruptum, Taning. 



Taning, 1928, t.c. p. 56; Parr, i.e. p. 59. 



St. 87. 25. vi. 26. 33° 53' 45" S, 9° 26' 30" E. Young-fish trawl, 1000 (-0) m. : i specimen, 35 mm. 

 St. 257. 24. vi. 27. 35° 01' 00" S, 10° 18' 00" E. Young-fish trawl, 25o(-o)m. : i specimen, 

 28 mm. 



The larger of the two specimens was coloured a brilliant silver on the sides in life, 

 on which silver photophores were just discernible: the dorsal surface was a brilliant 

 iridescent deep metallic blue. 



Myctophum glaciale (Reinhardt, 1837). 



Brauer, t.c. p. 80, fig. 92 ; Taning, t.c. p. 56 ; Parr, t.c. p. 60 

 28. X. 25. 13° 25' N, 18° 22' W. 4! m. net. horizontal, 900 (-0) m. : 14 specimens, 45-50 mm. 

 Hab. North Atlantic and Arctic waters. 



Myctophum laternatum, Garman, 1899. 



Brauer, t.c. p. 178, figs. 90-91 ; Taning, t.c. p. 56 (var. atlanticum); Parr, t.c. pp. 61, 67. 



The ' Discovery ' obtained 1 5 specimens of this species from the following stations 

 in the Atlantic, at depths ranging from 0-2500 m., measuring 11 to 27 mm. in length: 

 St. 86, 89, 100, 285, 287, 288, 289, 296. 



Hab. Atlantic; Indian and Pacific Oceans 



