62 
EINAR LÖNNBERG; 
(Schwed. Südpolar-Exp. 
The largest specimen measured 60 mm., the smallest 22 mm. in length without 
the caudal which is rather large and cleft fully to the middle or beyond. 
Length of head resp. 16 and 7 mm. 
Depth of body > 12,5 » 5,3 » 
Diameter of eye » 5,5 » 2,3 » 
Length of snout » 3 » 1,3» 
The specimens are in no good condition but the characteristics described above 
appear to be sufficient to prove the distinctness of this species. 
4. Myctophum parallelum n. sp. 
One specimen from a depth of 2,500 m. 23 June 1902. 48° 27' S. lat. 42° 36' 
W. long. 
D. 9. A. (probably) 21. 
Length of head almost 4 times in total length without caudal. Greatest depth 
of body fully 4 times in total length. Diameter of eye about 2 I /s times in length 
of head, snout half as long as eye, 4V5 times in length of head. Interorbital space 
very narrow, about I /io of the diameter of eye. The lens of the eye excentric 
moved in a dorsal direction (which BRAUER regards as the first beginning of form- 
ing a telescope eye). The posterior end of the maxillary is very broad and extends 
beyond the vertical through the posterior margin of the eye. Origin of the dorsal 
a good deal behind the vertical through the base of the ventrals. The luminous or- 
gans arranged as follows (with Brauer’s terms). PLO. below the level of the base 
of the pectoral near the anterior PVO., the other PVO. at the base of the pectoral. 
VLO. almost vertically above the base of the ventrals. The SAO. do not sit in a 
straight series because the hindmost one is placed a little higher than the others. 
The distance between the anterior and middle SAO. is also greater than that be- 
tween the middle and posterior, which appears to be a difference from the condition 
found in M. arcticum. PVO. and VLO. as in M. arcticum. AO. 18 in a continuous 
series. The Prc. sit further apart than in M. arcticum. Two great luminous spots 
below the caudal peduncle nearer to the caudal than to the anal fin. 
The dimensions of the single female specimen are as follows: 
Total length without caudal 42 mm. 
Depth of body 10,3 » 
Distance from snout to dorsal fin 21,5 » 
» » » ventral »... 16 » 
Length of head 11 » 
Diameter of eye 5 » 
Length of snout 2,5 » 
Interorbital width 0,5 » 
