56 
TABLE XVIII. Measurements, in centimetres, of Ecdysed Cuticles 
of Cancer pagurus. 
DATE OF 
ECDYSIS. 
SEX 
CARAPACE. 
ABDOMEX. 
CHELA. 
Length. 
Breadth 
Length. 
Breadth, 
Lkft. 
Bight. 
1 
1 = 
1 
2 
Sept. 24-25 ... 
F. 
2-2 
2-9 
1-3 
0-4 
0-6 
1-2 
0-6 
1-2 
August 16-17 ... 
F. 
2-1 
2-9 
1-4 
0-4 
0-55 
1-2 
0-55 
1-2 
Aug. 31-Sept. 1 
F. 
2-2 
3-0 
1-4 
0-4 
0-6 
1*2 
0-6 
1-2 
September 3-4 
F. 
2-3 
3-2 
1-5 
0-45 
0-7 
1-3 
0-6 
1-2 
September 5-6 
F. 
2-3 
3-2 
1-5 
0-45 
0-7 
1-3 
0-7 
1-3 
October 11-12... 
F. 
2-6 
3'6 
1-8 
0-5 
0-7 
1*4 
0-7 
1-4 
Sept. 17-18 .. 
M. 
2-6 
3-7 
1-8 
0*4 
0-8 
1-5 
0-7 
1-6 
July 26-27 ... 
M. 
2*8 
3*9 
1-9 
0-4 
0-8 
1-6 
0-9 
1-6 
October 12-13... 
M. 
2-9 
4-0 
1-8 
0-4 
0-9 
1-7 
1-0 
1-7 
July 24 
F. 
3-0 
4-3 
2-1 
0-7 
0-8 
1-8 
0*9 
1-8 
July 31- Aug. 1 
F. 
3-1 
4*5 
2-2 
0-6 
1-0 
1*8 
0*9 
1-8 
July 31-Aug, 1 
M. 
3-3 
4-8 
2-2 
0-45 
0-9 
1*9 
1*0 
1-9 
July 28 
M. 
3-6 
5-2 
2-2 
0-6 
0-9 
2-0 
1-2 
2-2 
August 17-18 ... 
F. 
3-9 
5-7 
2-8 
0-9 
1-2 
2-4 
1-2 
2-4 
September 8 ... 
M. 
5-3 
7-9 
3-6 
0-9 
1-7 
3-3 
1-6 
2-9 
July 29-30 ... 
F. 
5-5 
8-2 
4*1 
1-5 
1*9 
3-5 
1-8 
3-5 
* August 1 
F. 
6*9 
10-0 
Sept 17-18 ... 
F. 
10-3 
15*0 
8-7 
4-2 
3-6 
6*6 
3-8 
6-8 
* Carapace only— succeeding stage to preceding at an interval of a year. 
It would be straining the principal objects of this paper to refer 
to the measurements in detail, and they are few, because they have 
been purposely confined to the ecdysed cuticles in my possession. 
But in Chart X. those referring to the carapace and abdomen have 
been conveniently brought together. It is only necessary to draw 
attention to the fact that the length of the carapace bears a constant 
relationship to the breadth. The angle is 34° and the relationship 
may therefore be said to be about *68 : 1. The difference in the 
