86 Sigurd Johnsen. 
striata further has in common the large, loose-sitting scales, 
only those of the lateral line were present, and the number of 
scales in the lateral line. In the fin-formula A. striata, however, 
seems to hold an intermediate place between A. silus and A. 
sphyraena, the number of rays in the paired fins as in the former, 
in the vertical fins as in the latter. (See table on p. 58). At 
present therefore I only think it admissible to designate A. 
striata as the American representative of A. sphyraena. 
Argentina silus (Ascan.). This species probably spawns in 
the Sognefjord as — besides adult specimens — eggs and larvae 
are known from intermediate layers. The spawning-season seems 
to be of some duration as eggs are taken in March and in 
August. This corresponds to the dates from other waters. 
SCHMIDT (19060b) gives June—Sept. as spawning-time in the 
northern Atlantic; in the Skagerack eggs are known from 
February (EHRENBAUM 1909) and July (SCHMIDT). 
The smallest Norwegian bottom-stages are those which I 
got from the catches of the prawn-trawlers near Stavanger 19-19 
1916. Of a score of individuals preserved, one has a total 
length of 187 mm., the rest between 130 and 150 mm. Judging 
from the structure of the scales the first-named specimen was a 
year older than the others; the age probably being 3 and 2 
years respectively. | 
Acipenser sturio (L.). Based upon abt. 50 records over a 
period of 25 years COLLETT (1905) expressed as his opinion 
that this species most frequently visited our coast in the summer 
(June—July). From those records enumerated in the paper 
and from the statement that yearly one or more specimens are 
captured in the Kristianiafjord I think the view held by COLLETT 
mainly holds good for southeastern Norway. On p. 59 I have 
enumerated ten records from western Norway; February has 4 
records, March 2, April, May, June and August one each. Few 
as the records are, | think, however, that the early occurrence 
in the spring may not be looked upon as accidental. 
From Denmark OTTERSTRØM (1917) states that of 33 dated 
records 11 are from May, 7 from April; the others equally 
distributed over the other months of the year except Novbr. and 
Decbr. From Norway we likewise have no records from Decbr. 
and Jan. 
