BIHANG TILL K. SV. VET.-AKED. HANDL. BAND 24. AFE. IV. N:0 9. 23 
Of these percentages those numbered 1—-6, 8, 9 and 18 
are, on the whole, diminished with growing age, and those 
numbered 7 and 21 show an enlargement with age. The 
others are more or less variable. Nos. 11, 15 and 19 are re- 
markable because it seems, to judge from the facts related 
above, as if the percentage at first should become enlarged 
and again in a later stage lessened. That means, that, if 
the individuals which have been measured represent stages of 
normal growth in this species the anal fin first gradually by 
uneven growth receives a more posterior situation, but later 
becomes more advanced, and when it is most remote from the 
snout it has a comparatively great size. The distance be- 
tween the snout and the base of the ventral fins expressed 
as a percentage of the total length is nearly the same in the 
small specimen (108 mm.) as in the large one (266 mm.), 
namely 24,1 in the former and 23,6 in the latter. But as I 
have no intermediate stages I do not know if perhaps its 
relative position undergoes the same changes as that of the 
anal fin. 
When comparing the corresponding measurements of Ga- 
dus navagat and of G. saida we shall find that the per- 
centages which express the relation to the total length are 
in most cases larger in the latter form. Only with regard to 
the depth of the caudal peduncle, the length of the snout, 
the length of the bases of the second dorsal and the first 
anal fins G. navaga takes the lead, and the same might per- 
haps, on the whole, be the case with regard to the distance 
between the ventral and anal fins. With growing age G. 
saida approaches G. navaga in diminishing the percentages 
1, 2, 5 and 6 which concern the development of the head, the 
eye and the jaws and in an opposite direction by enlarging 
the percentage 21 which concerns the depth of the caudal 
peduncle. 
15. Lycodes vahlii REinHARDT (= L. esmarkii CoLLeTtt). 
1 specimen between Beeren Eiland and Norway, 7133 N., 1830 E.; depth 
410 m., gray clay, temperature + 2?” C., 2/9 98. 
With Professor Smitt I feel perfectly convinced that the 
names quoted above are synonymous. 
1 Conf. Smitt 1. c. p. 482—83. 
