346 Willis and Bur kill. — Flowers and 
short-tongued flies make far more species visits than they do 
in Flanders and Germany. 
TABLE XII. 
B'. 
A'. 
Blue and 
lilac. 
Rose and 
purple. 
Yellow. 
Eyed and 
white. 
White, or 
greenish. 
Decidedly desirable 
Desirable .... 
Indifferent . . . 
Injurious .... 
39-53 
32-45 
27-73 
.29 
30-66 
12-67 
5 I *99 
2-67 
3- 43 
4- 82 
88.94 
2-§I 
I.03 
6-84 
89-37 
2-75 
•27 
5.80 
75-37 
18.56 
TABLE XIII. 
Percentages of the individual visitors to Class B' arranged by families. 
«! 
'3. 
Bomb. 
1 
£ 
\ Wasps. 
Tenthr. 
! Parasit. 
Ants. 
d, 
<u 
h-1 
Lep.m. 
Lep.s 
£ 
Q 
Q 
6 
O 
w 
Blue and lilac §§ 1 and 3 . 
•29 
37-7^ 
.89 
_ 
1.48 
_ 
3I-56 
22-13 
5 60 
.29 
Rose and purple § § 2 and 4 
200 
25-33 
•33 
I- OO 
3-33 
— 
— 
12.67 
40-33 
ii-33 
1.67 
Yellow flowers §§5 and 6 . 
-12 
.24 
.24 
•06 
1-28 
.67 
•55 
— 
605 
87-60 
I -7 I 
1.47 
Eyed and white §§ 7 and 8 
•39 
1-03 
.64 
•03 
206 
2-OI 
•31 
.08 
3-87 
82-90 
5-93 
•75 
TABLE XIV. 
Species visits in different parts of Europe to the flowers of the Rose-Purple- 
Lilac-Blue series of B'. 
I 
Apis. 
s 
s 
M 
d. 
(U 
h-l 
£ 
ft 
c h 
fi 
0 
0 
O 
w 
Total. 
Clova 
(9 species) 
2 
22 
I 
3 
9 
25 
43 
8 
5 
Il8 
Germany — Muller . . 
(6 
„ ) 
6 
38 
66 
10 
43 
51 
15 
13 
242 
Flanders — MacLeod 
(5 
V ) 
5 
31 
24 
2 
21 
45 
13 
2 
— 
143 
Frisian Coast — Knuth 
and Verhoeff . . . 
(6 
„ ) 
5 
48 
21 
3 
27 
37 
33 
4 
1 
x 79 
Alps — Muller .... 
(4 
» ) 
1 
15 
5 
27 
7 
— 
4 
— 
59 
Pyrenees — MacLeod 
(2 
) 
— 
21 
8 
— 
30 
8 
1 
— 
69 
By season it can be shown that on flowers of both B' and 
A' the short-tongued flies decrease in percentage of individual 
visits towards autumn, while Coleoptera increase on B'; 
