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offspring reared in these and later experiments may appear 
trivially small, but this is due to the exacting nature of their 
voracious appetite and the time and care that has to be be- 
stowed upon each larva to bring it to maturity. 
HEREDITY OF THE NINE-SPOTTED PHASE. 
The offspring obtained from the three nine-spotted females 
were as follows: 
Female Offspring reared 
No. 1. Male parentage composite 4 nine-spotted and 15 normal 
No. 2. Male parentage composite 9 nine-spotted and 15 normal 
No. 3. Male parentage composite 20 nine-spotted and 20 normal 
Totals 33 nine-spotted and 50 normal 
The breeding together of the nine-spotted offspring gave 
the following results in the next generation: 
Parent Parent 
Pair of female of male Offspring reared 
No. 6 No. 1 No. 3 10 nine-spotted and 6 normal 
No. 7 No. 3 No. 2 16 nine-spotted and 3 normal 
No: <9 No. 1 No. 2 6 nine-spotted and 1 normal 
No. 10 No. 2 No. 3 10 nine-spotted and 2 normal 
Totals 42 12 
The nine-spotted offspring of the second generation were 
again mated together, and gave these results: 
Parent Parent 
Pair of female of male Offspring reared 
No. 12 INOS 7) No. 6 13 nine-spotted and 0 normal 
No. 18 No. 6 No. 10 12 nine-spotted and 5 normal 
Totals 25 nine-spotted and 5 normal 
The results of similar matings for the succeeding genera- 
tion were as follows: 
Parent Parent 
Pair of female of male Offspring reared 
No. 21 No. 12 No. 18 0 nine-spotted and 2 normal 
No. 27 No. 18 No. 12 8 nine-spotted and 5 normal 
Totals 8 nine-spotted and 7 normal 
It thus appears that into the fourth generation the nine- 
spotted phase, when bred in a direct line, still produced normal 
