BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 24. AFD. IV. N:0 9. 29 
this fish and other northern varieties of the charr. The au- 
thor mentioned distinguishes in this work the following va- 
rieties: Salmo alpinus, alpino-stagnalis, salvelino-stagnalis, 
stagnalis and salvelinus, and he has divided his material after 
size and age in six classes to the first of which our fish be- 
longs, namely, that comprising specimens measuring less than 
228 mm. The specimen which is described here does not how- 
ever resemble any of these forms or classes in all respects, 
but its percentages are nearly always smaller than those re- 
corded from other forms. With regard to the length of the 
head, the snout and the mandrble our fish is most similar to 
SmMitTT's S. stagnalis 7 of the second class! and with regard 
to the height of the caudal peduncle it comes nearest to the 
alpino-stagnalis and the stagnalis ? of the second class. The 
interorbital breadth is most similar to that of the alpino- 
stagnalis but not so very remote from that of the staqgnalis &. 
The distance between the snout and the dorsal fin is very 
short, 35,8 2, so that it differs very much from the same 
relative measurement of other forms; nearest in this respect 
come, however, the alpinus (I) I and the stagnalis (IT) A, both 
with 42,9, and the alpinus (IT) 9 with 42.5 «. The relative 
length of the base of the dorsal fin is most similar to that 
in the alpinus, but not very much dissimilar to the stagna- 
lis > (IT). The length of the pectoral fins is comparatively 
larger than in the stagnalis and approaches nearest the cor- 
responding relation in the salvelinus 9 and the alpino-stag- 
nalis A. The same is also the case with regard to the length 
of the ventral fins. The percentage expressing the relation 
between the total length and the distance between the pec- 
toral and the ventral fins (the »preeabdominal length») is very 
low, namely 25,5 2, so that the alpino-stagnalis A which 
comes next with 27,2 2 is a good deal superior. About the 
same can be said concerning the distance from the snout to 
the ventral fins; its percentage is 44,6 2 in our fish, 47,1 2 in 
the alpino-stagnalis and not less than 48,7 2 in the stagna- 
lis > (ID). In this respect, therefore, our specimen shows a 
feminine character because the same percentage is in the 
stagnalis 9 (IT) only 46,1 2. The distance between the ven- 
tral and the anal fins (the »postabdominal length») agrees in 
its relation to the total length best with the salvelino-stag- 
1 measuring 228 to 355 mm. 
