E. Kindle 263 
( 8 ) 18 (J (?cJ) X 8 $ ($<J); 12 nymphs hatched, of which 7 became j 4 
adult. Mixed brood. 13?$ 
(10) 13 (J (c?cJ) X 8 ? ($(^); 16 nymphs hatched, of which 7 became f 5^^ 
adult. Mixed brood. ( 2?? 
(11) 13 (?((?(?) X 19? (??); 27 nymphs hatched, of which 6 became j 
adult. Mixed brood. ( 3 $5 
(12) 13 (J (cJcJ) X 19 ? (??); 19 nymphs hatched, of which 2 became 
adult. Female brood. 2?? 
(13) 18 cJ (?{J) X 19 ?($?); 19 nymphs hatched, of which 1 became 
adult. Female brood (?). 1$ 
In this second generation, there are apparently six mixed broods, 
two possibly male and female and the last one is uncertain. In any 
case the numbers of the adults are so small that it is impossible to say 
whether these three broods were either mixed, or would have been 
respectively male and female. 
Third Generation. Broods from lice taken from the second genera¬ 
tion. The numbers refer to the number of the experiment in that 
generation. 
(2) 6 d (dd) X 4: ? (??); 78 nymphs hatched, of which 54 became 
adult. Male brood. 54 dd 
(3) 6 d (dd) X 4 ? (??); 39 nymphs hatched, of which 28 became 
adult. Male brood 28 dd 
(4) 6 d (dd) X 10 ? (d?); 19 nymphs hatched, of which 12 became j 6 dd 
adult. Mixed brood. (6?? 
(5) 6 d (d<?) X 4 ? (??); 56 nymphs hatched, of which 42 became 
adult. Female brood. 42 $$ 
(6) 6 d (dd) X 8 ? (d?); 31 nymphs hatched, of which 20 became (12 dd 
adult. Mixed brood. ( 8$$ 
(1) 6 d (dc?) ^ 19?(d?); 38 nymphs hatched, of which 22 became j 15 dd 
adult. Mixed brood. ( 7 ?$ 
(8) 6 d (d(J) X 2 ? (d?); 30 nymphs hatched, of which 17 became (10 dd 
adult. Mixed brood. 1 7 $$ 
(9) 8 d(d?) X 4 $ (??); 43 nymphs hatched, of which 32 became 
adult. Female brood. 32?$ 
(10) 8 d (d?) X 4 ? (??); many eggs were laid but all were sterile. 
(13) 10 d (d?) X 4 ? (??); 47 nymphs hatched, of which 37 became 
adult. Female brood. 37 $$ 
(14) 10 d (d?) X 4 $ (??); 51 nymphs hatched, of which 37 became 
adult. Female brood. 37 $$ 
(17) 11 d (d?) X 4 ? (??); 36 nymphs hatched, of which 13 became 112 $? 
adult. Female brood (?). ( 1 d(?) 
