364 
62° 
THEORY OF STATISTICS. 
TABLE B.—Chrysomelidee (beetles). Numbers of General withil,09 R38 
Species. (Compiled by Dr J. C. Willis, F.R.S. ; cited from G. U. Yule, 
‘A Mathematical Theory of Evolution based on the Conclusions of Dr 
J. C. Willis,” Phil. Trams., B, vol. cexiii. 1924, p. 85. 
Species. Genera. Species. Genera. Species. Genera. 
1 215 32 74 ! 
90 33 76 1 
38 34 77 : 
35 35 79 : 
21 36 &3 
ie 7 : x4 
HH 23 / 
: z 29 
4 i 92 
10 = ¢ 93 
oy 110 
: 4. 114 
i 115 
43 128 
49 132 
50 : 133 
52 146 
h3 163 
; 3 196 
2 3 217 
Z J 227 
22 264 
o 327 
, 399 
oo 417 
A 4 681 
L7 Lud 
28 : 71 
29 v 72 Total 7 
30 3 va