222 On Fishes collected during the Peary Expedition. 



however, both specimens closely correspond with some young 

 Lycodids from the Kara Sea that Liitken has * identified 

 with L. Lilthenii. Thus it seems safe to consider them to 

 belong to the same species. 



Below are some measurements &c. of my specimens : — 



Number of rays in the 



pectoral 



Width of the pectoral 



Length of the jiectoral 

 Length of the tail t . . 

 Height of the head 



Length of the head 

 I'otal length 



Specimen from 

 Murchison's Sound. 



18 



equals the height of the 



body + the dorsal. 

 6 mm. 

 24 mm. 

 equals the greatest 



height of the oody \. 



105 mm. 

 44 mm. 



Specimen from 

 Inglefield Gulf. 



18 



equals the height of the 



body + the dorsal. 

 8 mm. 

 36 mm. 

 a little less than the 



greatest height of the 



body J. 

 14 mm. 

 K>Q mm. 



As will appear by this list, the length of the head is 

 about one fourth of the total length, and the length of the 

 pectorals is about one seventh of the total length ; in both 

 specimens the tail was a little more than iialf of the total 

 length. 



Liitken mentions the length of tlie head in the specimens 

 from the Kara Sea as about one fourth, and that of the pec- 

 torals little less than one seventh, of the total length. The 

 tail, niea.«ured from the anus to the end of the caudal, is in 

 the same individuals very little more than half the lengtii of 

 the body, altliough with a slight variation. According to 

 Liitken, the proportion of the tail affords a characteristic 

 difference between L. Liitkenii and L. reticulatus, Keinh. 

 Li Collett's lype specimens, however, the tail is compara- 

 tively longer than in the specimens from the Kara Sea, at least 

 if we judge by the figures. In the Lycodes from Inglefield 

 Gulf the tail is a little longer than it is depicted in Collett's 

 figures; but, considering the usual variability of the tail in 

 long-tailed fishes, the peculiarity just referred to cannot j)revent 

 us from identifying that specimen also with L. Luthenii. For 

 the same reason the length of the tail cannot be considered a 

 valid characteristic. The exceptional size of the pectorals, 

 which in more mature specimens are broader than the body is 

 high, is, without doubt, the safest criterion (Collett's type 



* i. c. 



t Measured from the anus to the point of the caudal. 



\ Without the dorsal. 



