G. S. Graham-Smith 
495 
stabulans, Sarcophaga, Lucilia, C. vomitoria, M. pabulorum, Mydaea 
and small Anthomyidae. Other species are found more rarely, the 
small numbers of H. dentipes and 0. leucostoma attracted to fruit being 
specially remarkable. 
TABLE IV. 
Trap VII. Bailed with fruit. In an open situation. 
An 
cr 
5* 
Sept. 
Oct. 
Nov. 
Total 
s 
$ 
S 
¥ 
<J 
¥ 
$ 
$ 
c? 
$ 
C. erythroeephala 
22 
41 
95 
140 
148 
146 
55 
61 
320 (45-2 %) 
388 
708 
C. vomitoria 
10 
7 
17 
12 
22 
27 
0 
1 
49 (51-0 %) 
47 
96 
P. groenlandica ... 
0 
1 
0 
1 
0 
0 
0 
0 
0 
2 
2 
Lucilia 
15 
45 
12 
30 
3 
4 
0 
0 
30 (27-5 %) 
79 
109 
P. eriophthalma ... 
0 
0 
0 
0 
0 
1 
0 
0 
0 
1 
1 
P. cornicina 
0 
0 
0 
0 
0 
1 
0 
0 
0 
1 
1 
M. domestica 
0 
1 
0 
2 
3 
2 
0 
0 
3 (60-0 %) 
5 
8 
M. stabulans 
39 
108 
28 
56 
6 
22 
0 
0 
73 (28-1 %) 
186 
259 
M. pabulorum 
9 
16 
11 
17 
13 
19 
0 
0 
33 (38-8 %) 
52 
85 
P. rudis 
0 
0 
3 
5 
2 
1 
0 
1 
5 (71-4 %) 
7 
12 
Sarcophaga 
37 
33 
32 
31 
5 
9 
0 
0 
74 (50-3 %) 
73 
147 
Mydaea 
1 
2 
0 
39 
3 
20 
0 
3 
4 ( 0-5 %) 
64 
68 
H. dentipes 
0 
0 
0 
5 
0 
7 
0 
2 
0 
14 
14 
P. lardaria... 
0 
0 
0 
0 
1 
2 
0 
0 
1 
2 
3 
0. leucostoma 
0 
2 
0 
0 
0 
0 
0 
0 
0 
2 
2 
Scatophaga 
0 
0 
0 
0 
0 
0 
1 
3 
1 
3 
4 
Small Anthomyidae 
6 
16 
4 
11 
8 
15 
0 
1 
18 (29-5 %) 
43 
61 
Other flies... 
2 
5 
3 
4 
5 
4 
0 
2 
10 (24-0 %) 
15 
25 
Total 
141 
277 
205 
353 
219 
280 
56 
74 
621 (38-7 %) 
984 
1605 
In the trap baited with ripe fruit the males of most species were 
caught abundantly, forming 38 % of all the flies captured. They were 
also very common on fruit hanging on trees, being sometimes found in 
considerable numbers on plums on stormy days when very few females 
were about. 
A few experiments with plums were made in August in order to 
ascertain roughly the extent of contamination caused by flies and 
wasps. Ripe plums from two gardens were removed from the trees 
with sterile forceps, and dropped separately into sterile, wide mouthed 
bottles. Three plums which were apparently perfect were washed with 
sterile salt solution, and cultures prepared from the fluid on agar and 
on McConkey’s lactose-bile-salt-neutral-red medium. Only a few un¬ 
important organisms, spore producing bacilli, cocci, etc,, grew in these 
cultures. Seven plums were chosen in which wasps and other creatures 
had gnawed holes. Sterile salt solution was poured into these cavities 
