Rau—Longevity in Saturnid Moths. 37 
TABLE 21. 
Age When First Eggs Were Deposited. 
AGcre—DAYs 
Lor ees = 
le 
1 2 3 4 5 6 Ae S 
Promethea. Stibn as ene ee ASI 2 8 9 5 4 |) 28 
nis. SE. Li sewn wew ees 1911 1 4 1 2 ty er 
Lana; Pike Goss 1911 (a Wee ose | ‘ 9 
Cy So orn ee eee 1912 2 Ps as a ‘ 6 
Polyphomus, St. bi eis oss 1911 1 5 - f 
de emus. Ni Vasant 1912 Tie oe we 11 
Polyphemus, Ga. .........4%: 1913 "tk, Vale Be tee 11 
Polyphemus, St. L. .......... 1913| . 18° 11 8 1 1} 39 
Polyphemus, Fall River ..... 1913s. 51 10 3 z 20 
MOREL eee tae aoes oo EN eee oe ot ROE BT To 2T 1 aa 5 1} 142 
terial until after mating much would be gained and noth- 
ing lost, since, as the foregoing discussions have shown, 
oviposition is more complete after mating than without 
it in spite of the expenditure of a comparatively long 
time for copulation. 
In 1912 some Cecropia, kept in a living-room at the 
ordinary temperature, emerged in February and March. 
After emerging they were subjected to varying degrees 
of temperature. It was noticed that oviposition in these 
insects commenced much later than usual in life. We 
have previously recorded that unmated females of this 
species (these were unmated) usually oviposit on the 
second or third day after leaving the cocoon. Under 
these abnormal conditions these 19 insects first ovi- 
posited on the following days of age: 
2 individuals. 
AR ARGS i TS Fs tee a bed 
BT a oy ee ek ee eR nee 1 individual 
Di mye a ee ne ee 3 individuals. 
PE GAVE Gis cs ke eee oe mai .... 2 individuals 
WS Cys oi oe co eee ese rere 2 individuals. 
O Garner ieee aren tenes .... 1 individual. 
CUS a RE oli el aT HS ... 4 individuals. 
6 daye. <0: ‘Mx icseiwens Se low w diel ss ewe a eanideda 
OEE PREC MCT IE ROM Tre ddechraieracis 
