Gr. H. F. Nuttall 
411 
Larvae. 
-Lot Host 
N. 1732 Ram 
N.X Hedgehog 
O O 
N. X Hedgehog 
Daf,e when 
put on host 
Host main¬ 
tained at 
average 
temp, of 
Number of gorged 
larvae collected on 
successive days 
20. n. 1913 
3'3° C. 
3 
on day 
5 
547 
0 
610 
99 
7 
812 
99 
8 
442 
,, 
9 
249 
99 
10 
404 
99 
11 
232 
99 
12 
112 
99 
13 
47 
99 
14 
50 
99 
15 
17 
99 
16 
6 
99 
17 
2 
99 
19 
3533 
20. I. 1901) 
ea. ]2°C. 
13 
on day 27 
71 
99 
28 
8 
99 
31 
80 
99 
32 
120 
99 
33 
160 
99 
35 
50 
99 
42 
502 
17. IX. 1900 
ca. 18° C. 
13 > 
on day 12 
316 
99 
13-14 
95 
99 
15 
88 
99 
16 
49 
99 
17 
561 
To determine if the gorged larvae abandon the host more freely by 
day than by night, a number of unfed larvae (N. 1732) were placed on 
a ram’s scrotum on 20. ii. 1913. They were afterwards collected in two 
lots: (a) those falling olf by night (10p.m. to 10 a.m.) and (6) those 
falling off by day (10a.m. to 10p.m.) on successive days: 
Night collection Day collection 
25—26. n. gathered 192 
26. n. 
gathered 355 
26-27. 
148 
27. 
„ 462 
27-28. 
191 
28. 
„ 621 
28. n.-l. ni „ 
180 
1. m. 
„ 262 
Parasitology vii 
711 
1700 
27 
