328 DISCOVERY REPORTS 



Myctophum (Lampanyctus) townsendi, Brauer, 1906, t.c. p. 167. 



Myctophum (Latnpaftyctus) warmuigi, Brauer, 1906, t.c. p. 229, fig. 149; Pappenheim, 1914, 



Deutsche Siidpolar -Expect, xv, Zool. vii (2), p. 195; Barnard, 1925, Ann. S. Afric. Mus. xxi, 



P- 237- 

 The 'Discovery' obtained 14 specimens of this species from the following stations 

 in the North and South Atlantic, at depths ranging from 0-2000 m., measuring 17 to 

 67 mm. in length: St. 80, 85, 104, 257, 270, 285, 286, 287, 288, 294, 296, 297. 



Depth of body 4^ to 4! in the length, length of head 3 to 3I. Snout much shorter 

 than eye, diameter of which is 3 to 3 1 in length of head and equal to or greater than 

 interorbital width. Dorsal 13-15; origin above or a little in front of or behind root of 

 pelvic. Anal 13-15; origin below last rays of dorsal. Pectoral 13-15; about as long as 

 head, extending to origin of anal or beyond. Pelvic 8. 36-38 scales in the lateral line. 

 PLO photophore much nearer to lateral line than pectoral fin. 2 PVO, well separated 

 from each other, one opposite the pectoral base, the other vertically below it. 5 PO, 

 the last a little elevated. VLO equidistant from lateral line and pelvic fin or rather 

 nearer the latter. 5 VO, the second, third and fifth a little elevated. 3 SAO, very 

 slightly angulate, interspace between first and second less than that between second and 

 third; third SAO touching the lateral line. AO 5-6 + 4-6; last of anterior series some- 

 times a little elevated ; posterior series all behind the anal fin. 2 Pol, the upper in contact 

 with the lateral line. 4 Pre, the interspace between the third and fourth much greater 

 than that between the remainder. A luminous scale above the pectoral fin and a group 

 of 2-7 in the neighbourhood of the lower PVO ; a plate sometimes present above axil 

 of pelvic ; a series of 2 to 4 plates between root of pelvic and vent, and often one on each 

 side of the vent ; 3 to 5 plates at base of anal, not extending to hinder end of fin ; a series 

 of plates on upper and lower edges of caudal peduncle, those below extending forward 

 nearly as far as the anal fin; 3 to 5 small plates on middle part of base of dorsal fin, and 

 sometimes another series in front of this fin; no plates in front of the adipose fin. 



Described from 10 specimens, 27-67 mm. in length, including two of the types of 

 the species from the Cortes Banks, California. 

 Hub. North and South Atlantic; Indian Ocean; Pacific. 



Lampanyctus hectoris (Giinther). 



Scopelus hectoris, Giinther, 1876, Ann. Mag. Nat. Hist. (4), xvii, p. 399. 

 Scopelus argenteus, Gilchrist, 1904, Mar. Invest. S. Afric. in, p. 15, pi. xxxvi. 

 Myctophum {Lampanyctus) argenteus, Barnard, 1925, Ann. S. Afric. Mus. xxi, p. 238. 

 Lampanyctus argenteus. Parr, 1928, t.c. p. 83. 



St. 99 D. 27. ix. 26. 33° 20' 00" to 33° 11' 00" S, 17° 17' 00" to 17° 26' 00" E. 70 cm. tow-net, 

 horizontal, 200 m. : i specimen, 57 mm. 



Depth of body 4I to 5 in the length, length of head 3! to 3^. Snout much shorter 

 than eye, diameter of which is 3 j to 3|^ in length of head and equal to or less than inter- 

 orbital width. Dorsal 13-14; origin above or a little behind root of pelvic. Anal 15-16; 

 origin below last dorsal ray or a little farther back. Pectoral 13-14. Pelvic 8. 37 to 39 



