Rau—O bservations on Samia Cecropia, Linn. 31 
majority of cases, we find that, could its life have been 
prolonged, a fair proportion of eggs could have been de- 
posited. The species is monagamous, all attempts to 
mate one male with more than one female or one female 
with more than one male being futile. 
(b) The number of eggs deposited by fertilized females. 
Notes derived from observations in eleven instances. 
KNOWN AS NUMBER OF EGGS 
A 10 
A loa § ae 
Al 317 
A 9 287 
A 8 260 
A 15 231 
A 12 229 
A 4 217 
A 3 213 
All 187 
A 5 159 
The greatest number of eggs were deposited by A 10 
and A 10?, which were placed in one cage. 796 eggs were 
deposited by the two females. Perhaps one or both were 
abnormal, as the greatest number of eggs deposited by 
any one female was 317. The smallest number of eggs 
were deposited by A 5,159. The average number of eggs 
deposited by eleven females was 263 3/11. 
J. J. Davis,? who has made observations on the num- 
ber of eggs deposited by the Cecropia moth, finds that, in 
a count of twenty lots, the greatest number deposited by 
any one female was 366 eggs, the smallest 119 eggs, and 
the average for the twenty lots, 243.9 eggs, which is a 
smaller average by almost 20 than my observations give. 
(c) Lhe number of eggs deposited by unfertilized females. 
Notes derived from observations in four cases. 
KNOWN AS NUMBER OF EGGS 
B5 118 
4 : 
a 
ao t 380 
The average number of eggs deposited by four unfer- 
tilized females was 157. 
2 Entomological News. 368. D 1906. 
