MYCTOPHIDAE 329 



scales in the lateral line. PLO photophore much nearer to pectoral fin than lateral line. 

 2 PVO, close together and more or less level with lower part of pectoral base. 5 PO, first, 

 second and fourth forming a straight line near middle of thorax, third and fifth elevated, 

 level with root of pelvic. VLO nearer pelvic fin than lateral line. 5 VO, forming a 

 curved line, the third most elevated. 3 SAO, forming a straight oblique line, the lowest 

 near to the last VO. AO 8 + 6, the two series well separated, i Pol, about equidistant 

 from lateral line and ventral series of photophores. 5 Pre, well separated from posterior 

 AO, the last about equidistant from lateral line and lower edge of caudal peduncle. 

 No luminous scales. 



Described from 7 specimens, 40 to 57 mm. in length, including the type of the species 

 and co-types of L. argenteus. 



Hab. Off South Africa; New Zealand. 



Lampanyctus elongatus (Costa, 1844). 



Brauer, I.e. p. 232, figs. 152-153; Taning, t.c. p. 64; Parr, t.c. p. 80. 



St. 168. 21. ii. 27. 60° 58' 00" S, 48° 05' 00" W. Young-fish trawl, 100-150 (-0) m. : i specimen, 



52 mm. 



St. 287. 19. viii. 27. 2° 49' 30" S, 9° 25' 30" W. Young-fish trawl, 800-1000 (-0) m. : i specimen, 

 30 mm. 



St. 288. 21. viii. 27. 00° 56' 00" S, 14° 08' 30" W. Young-fish trawl, 25o(-o)m. : i specimen, 



53 mm. 



St. 293. 24. viii. 27. 4° 18' 15" N, 16° 51' 00" W. Young-fish trawl, 100-120 (-0) m. : i specimen, 

 50 mm. 



Hob. Mediterranean; North and South Atlantic; Antarctic; Pacific. 



Lampanyctus photothorax. Parr. 

 Parr, 1928, t.c. pp. 81, 95, fig. 13. 



St. 256. 23. vi. 27. 35° 14' 00" S, 6° 49' 00" E. Young-fish trawl, 850-1 100 (-0) m. : i specimen, 

 25 mm. 



St. 281. 12. viii. 27. 00° 46' 00" S, 5° 49' 15" E. Young-fish trawl, 850-950 (-0) m. : i specimen, 

 42 mm. 



Hab. North and South Atlantic; West Indies. 



Lampanyctus guentheri, Goode and Bean, 1895. 

 Taning, t.c. p. 65 ; Parr, t.c. p. 82. 



The ' Discovery ' obtained 39 specimens of this species from the following stations 

 in the North and South Atlantic, at depths ranging from 0-1500 m., measuring 21 to 

 70mm. in length: St. 66, 69, 76, 240, 241, 242, 268, 281, 284, 286, 288, 289, 293, 

 296, 297. 



Hab. North and South Atlantic; Australian seas (?). 



