62 EINAR LÖNNBERG, (Schwed. Südpolar-Exp. 



The largest specimen measured 6o 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. s ; 5,3 ' 



Diameter of eye > 5iS ■ 2.3 > 



Length of snout » -3 -" irS ■• 



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','5 times in length 

 of head, snout half as long as eye, 4V5 times in length of head. Interorbital space 

 very narrow, about ',10 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. arcticiun. PVO. and VLO. as in M. arctician. AO. 18 in a continuous 

 series. The Pre. sit further apart than in J/, 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 lo^s - 



Distance from snout to dorsal fin 21,5 



> - > . ventral : 16 > 



Length of head i ' 



Diameter of eye 5 * 



Length of snout 2.3 



Interorbital width o.; ■ 



