84 
Biologu of Ixodulae 
Males. Lot 1307, captured 2. vii. 1911, included numerous gorged nymphs from a propor¬ 
tion of which 17 males and 14 females issued, their date of emergence and longevity 
when unfed being recorded as follows : 
No. 
Time which elapsed 
between day of collec¬ 
tion and emergence 
Tick 
survived 
for 
Remarks 
Lot 1307 
1 
7 days 
12 days 
Maintained at an average 
2 
11 
19 
room temperature of 
3 
34 
34 
12° C. in corked tubes 
4 
10 
97 
on moist filter paper, in 
5 
39 
145 
semi-darkness. 
0 
11 
173 
7 
10 
219 
8 
10 
246 
9 
30 
258 
10 
17 
271 
11, 12 
4 
327 
13 
11 
345 
14, 15 
7 
349 
16 
12 
357 
17 
11 
376 
Females. 
? No. 
Lot 1307 
1 
6 days 
58 days 
Ditto. 
2 
11 
62 
3 
9 
74 
4 
16 
83 
5 
9 
87 
6, 7 
4 
134 
8 
9 
175 
9 
6 
178 
10 
22 
101 
11, 12 
11 
202 
4 
13 
19 
209 
14 
22 
289 
Note: — Some males 
and females of Lot 
1703 are still 
alive after 260 days (21. iii. 13). 
Eleven unfed females out of 30 survived for 103 to 140 days. 
Effect of the bite of I. putus. 
When handling lot 1703, an unfed $ escaped, in spite of the usual 
precautions, and the next day (13. Vll. 1912) was found attached on my 
left knee. On the 17th the spot itched slightly and appeared reddened 
around the seat of the puncture; the tick measured 3'5 mm. in length. 
The irritation then subsided and a pledget of lint, held in place by 
strapping, was then placed upon the spot. On the morning of the 
20th the tick dropped off, having attained a length of 5‘5 mm.; it 
