G. H. F. Nutt ALL 
103 
Longevity of unfed ticks. 
The following protocols include Stockman’s observations as well as my own, the latter 
being but few 
Larvae. 
Observer 
No. 
Date when 
emerged from eggs 
Date to which 
larvae survived 
Longevity 
unfed (days) Remarks 
Stockman 
16/3 
2. VIII, 1907 
1. VI. 1908 
303 This being the maximum 
Nijmplis. 
Observer 
No. 
Date of 
emergence 
Date to which 
nymphs survived 
period in 1 out of 9 lots. 
Longevity 
unfed (days) Keniarks 
Nuttall 
1 
3. VI. 1906 
25. IX. 1906 
114 At 16° 0. most of the lot 
Stockman 
30 
20. X. 1907 
11. III. 1908 
were dead. 
142 Hibernated at outside 
?) 
27 
29. IX. 1907 
30. III. 1908 
temperature. 
182 Ditto, and after starving 
> ) 
53 
16. X. 1907 
1. V. 1908 
182 days raised to adults. 
197 -j 
5 J 
32 
12. X. 1907 
30. IV. 1908 
200 1 Hibernated at outside 
> i 
21 
12. IX. 1907 
3. IV. 1908 
203 I temperature. 
29 
20. IX. 1907 
30. V. 1908 
252 j 
Adults. 
Observer 
No, 
Date of 
emergence 
Date to which 
adults survived 
Longevity 
unfed (days) Kemarks 
Nuttall 
1 
13. I. 1906 
— 
255 At 12° C. lived longer. 
2 
18. IV. 1906 
death not noted. 
160 
Stockman 
16/4 
6. IX. 1906 
18. IV. 1907 
224 At outside temp., feeble 
when state recorded. 
Oviposition. 
The manner in which the female H. punctata lays her eggs was 
illustrated by me in the Harben Lectures 1908, but I kept no records 
of the time it takes for the tick to oviposit and did not count the 
number of eggs laid by single females. Judging from memory a female 
would lay 3000-5000. When the opportunity arises I shall have 
enumerations made. Apart from this the only other observations 
recorded are those of Stockman which are likewise incomplete. He 
states that the shortest and longest times which elapsed before oviposition 
commenced were 10 and 211 days respectively, the female usually 
ovipositing 24-29 days after abandoning the host. Some gorged 
females (Lot 27) survived 216 days without ovipositing. He gives no 
