94 PROF, R. COLLETT ON THE [Jan. 12, 
Most of the 12 males thus had a length of from 46 to 47 
feet, the average being 45:8 feet (13°9 metres). 
Among the 12 females, the length was most frequently between 
47 and 48 feet, the average being 47 feet (14:3 metres). In 
girth, the males measured 33°7 feet, the females 36°6 feet *. 
The 20 specimens in 1908 were of the following lengths :— 
Mates (12). FEMALES (8). 
English feet. English feet. 
(14:3 metres 50 (15°2 metres 
AT (14:3 Cn, 49 (Eg 
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oo 
— 
= 
is) 
pm 
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S 
SoS SS Sr 
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) 
AG (yg Bye GS 
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) 
Thus in 1908 the length of the 12 males was between 36 and 
47 feet, the greater number of them being from 42 to 46 feet. 
The average length was 43:8 feet (13°3 metres). 
Of the 8 females, one was 50 feet in length, and another, a 
young one, 31 feet, the remainder being between 43 and 49 feet. 
The average length this year was only 44 feet (13°4 metres). 
The females in 1908 measured on an average 35 feet (10°6 
metres) in girth, and the males 33°8 feet (10°3 metres), but the 
girth varied considerably. Among the males this year, there 
was one specimen that had a total length of 46 feet, and 
measured exactly the same in girth, namely 46 feet. Although 
it was not greatly inflated with gas (it had been dead only 
twenty-four hours), it was almost as round “as a ball” when it 
lay on the beach. 
Colour.—There is no great difference to be found in colour 
between male and female. 
A uniform black must be considered to be the typical colour, 
covering the entire body without any great differences of shade. 
In some specimens, however, more or less of the ventral surface 
was white. The boundary of this white colour was clearly 
defined against the black sides; in many specimens the white 
area was somewhat constricted in the middle, and in parts, 
especially towards the sides, was covered with oblong, black 
spots. 
* Haldane, Ann. Scot. Nat. Hist., April 1908, p. 69. 
