154 THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 
From Cocks we obtain the following statistics of 36 specimens taken at the 
Norwegian stations (17 and 18): 
BALAZINOPTERA MUSCULUS (L.). NORWAY. 
| Males. Females. 
3 | j | Cs 
MER SNMMNagasa ncogoooowd a600 | 85 ft. o in. | 87 ft. 65 In. 
MGI oo ooo ob Co ut teieke 51 s fo) - 52 ‘ ro) Fe 
INGSEI Sa cande H600 Aca oGaoODe | (CONG oO 4 (36) 75 8 
On comparing these figures with the previous ones, it will be observed that 
the Norwegian whales, both males and females, appear to attain a greater length 
than those of Newfoundland. The average length is also greater, though the com- 
putation includes individuals smaller than any of the Newfoundland specimens. 
Before my arrival at Balena station, Newfoundland, in 1901, and also in the pre- 
ceding year, a number of Sulphurbottom whales had been taken. Adding such 
of the measurements of these as are available to my own, the following figures 
are obtained : 
BALASNOPTERA MUSCULUS (L.). NEWFOUNDLAND. 
Males. Females. 
7 mt |_ 
MES ENES shosccannssoco | 81 ft. o in. 79 ft. o in. 
MMi esonanbaodons abior 35 Oe Be Oe 
AW ELAR tn clears ceeReorciFecerstael (7) Fo PB (2a) jo @& 
Though a higher general average is obtained in this way, the maximum and 
average for females are a little less than for males. This is due to the fact that 
many comparatively small females and few very large ones were taken in the 
summer of 1900. 
Averages obtained in this way, as already remarked in treating of B. physalus, 
are not satisfactory on account of the inclusion of immature individuals. The best 
way to get rid of these, in the case of the females at least, will be to omit from 
consideration all specimens having a length less than that of such as are ascertained 
to be sexually mature. Guldberg, as we have seen (15, 17, sep.), remarked of the 
Norwegian specimens, “the individuals that are 70 ft.‘ and under I have always 
found to be rather young and not full-grown.” He also remarked (57, 164): “It is 
not easy to fix the minimum for gravid females. I am, however, inclined to fix the 
minimum at 70 feet [= 72 ft. 1 in., English measure], and to estimate the average 
at about 75 feet [234 m.]* or more.” Of the Norwegian females cited by Cocks as 
containing foetuses, or having milk running, the smallest is 74 feet 2in. Of the 
females taken at Balena station, Newfoundland, 1901, the following females ob- 
served by myself contained fcetuses : 
‘ Norwegian feet; equals 72 ft. 1 in., English measure. *77 ft. 1 in., English measure. 
a 
ee 
