Insects in Great Britain. 
345 
contains those whose flowers belong to the yellow-white 
series. The latter is visited by less desirable insects than the 
former, and therefore, as shown in Tables XII and XIII, 
approaches A'. 
TABLE x. 
The number of individuals observed on the flowers of Class A'. 
< 
[ Bomb. 
d 
w 
j Tenthr. 
Parasit. 
C 
< 
Wasps. 
d. 
<U 
1-1 
| Lep.m. 
d 
V 
i-5 
6 
A 
(A 
A 
0 
0 
w 
Total. 
84. Pimpinella Saxifraga 

_ 
2 
21 
45 
7 
_ 
I 

7 
7 
98 
4 
_ 
178 
85. Conopodium denudatum 
1 
— 
— 
9 
II 
— 
— 
— 
— 
— 
15 
33 
— 
2 
71 
86. Anthriscus sylvestris . . 
— 
— 
— 
4 
I 
— 
— 
— 
I 
— 
4 
hi 
3 
1 
125 
87. Meum athamanticum 
— 
— 
— 
34 
II 
2 
— 
— 
4 
— 
45 
375 
16 
2 
489 
88. Angelica sylvestris . . 
2 
*9 
— 
21 
89. Heracleum Sphondylium 
2 
— 
— 
18 
77 
— 
3 
— 
— 
— 
8 
381 
70 
37 
59 6 
2 
“ 
2 
Total 
3 
- 
2 
86 
i45 
2 
3 
I 
5 
“ 
79 
1,002 
112 
42 
1,482 
Percentage .... 
• 20 
- 
•13 
5.80 
9.78 
•13 
.20 
•°7 
•33 
- 
5-33 
67.61 
7.56 
2.85 
TABLE XI. 
Available. 
B'. 
A'. 
No. 
% 
No. 
% 
No. 
% 
Distinctly desirable 
Desirable .... 
Indifferent . . . 
Injurious .... 
i< 7 6 3 
1,277 
12,993 
L 273 
10.19 
7-37 
75.08 
7-36 
37 6 
447 
5,164 
169 
6- 1 1 
7- 26 
8389 
2-73 
4 
86 
1,117 
275 
0-27 
5.80 
75-37 
18.56 
Both halves of Class B' as well as Class A' obtain more 
desirable visitors in North Central Europe than they do at 
Clova. Whether, as in Tables XIV, XV, and XVI, we contrast 
Muller* s or MacLeod’s or Knuth’s and Verhoeff’s observations 
with ours, we see in each case that long- and mid-tongued 
Hymenoptera make far more species visits in Germany or 
Flanders than they do in Scotland, and that in Scotland 
