THE LESSER APPLE WORM. 49 
hatched between one hundred and six and one hundred and twenty- 
four hours after deposition, the average being slightly more than five 
days. 
The following table of group records taken from batches of eggs 
deposited on sides of breeding cages and on apple foliage kept inside 
of cages shows the approximate time of incubation: 
TaBLE III.—Period of incubation of eggs of Enarmonia prunivora under normal out- 
of-door conditions, Siloam Springs, Ark., 1908. 
Num- | Date de- 
ber of | posited, Black spot appeared. Egg hatched. Time. 
eggs. | night of— 
Days. 
Ce| ATI E28 ASO PLEMADEL:2) MI <, 5 otc issee'= cterers si ceieeieters S(jeliseal cee Chats omen a aoosnssesee 5} 
SiPAlg..29:\) Septeniber's; a.m. ..- =< se... Septenther'45 lass yoo cece cess 5 
aoept.. 67 | September lilac mi 722.2322 22-42. -5 September s2\a.amy. - seis eee 5} 
Dieepte of | september L2 vm. 2 802.25 cece ek Seplemberslo. a. Mle a eee ce see 54 
to sSept. 9) Septemberilsjep.ims 6222.5... 2.58 Septentherwo anni secre eases. 54 
1 | Sept. 11’ | September 16,9. m....5.-....--.2-- Septem berWO pawl esses see esse 5} 
35 | Sept. 12 | September 17, a.m..-..............- Seplember dy; Pama s --eeease secs 44-54 
Septembendovdamae essa acer cs see 43-54 
4 | Sept. 13 | September 18, p. m- .....-.........- September Oia miss 4. - 45s. eaace 54 
6)| Sept. 14 | September 19) p. m..........:...-.- September: 20%a, Mls). 2 s ceice oe ae 54 
THE LARVA. 
The length of the larval period from time of hatching to leaving 
fruit varied from thirteen to fifteen days during July, from twenty 
to twenty-seven days in August and the first half of September, 
and increased to from thirty to fifty days after the middle of Sep- 
tember to early November. 
Individual records for over 100 larvee show a minimum of thirteen 
days and a maximum of fifty days for actual time in fruit of normal 
healthy larvee which left fruit prior to November 6. 
THE LARVA IN COCOON BEFORE PUPATING. 
This period varies greatly, according to where the larva is kept, 
being much longer when confined with bits of paper, etc., in glasses. 
From about 100 specimens allowed to spin cocoons in ends of apples, 
either at the stem or blossom end, the average time during the months 
of July and August was seven to eight days from leaving the fruit 
to pupation, the minimum being one day and the maximum twelve 
days. , 
THE PUPA. 
The actual duration of the pupal stage varies from a minimum of 
four (?) to a maximum of seventeen days, averaging about ten days. 
Seventy-four per cent of all pupx observed in Arkansas developed 
moths in between eight and twelve days. The records in Washington 
agree very closely with those in Arkansas. 
