98 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table IV. — Third larval period of the peach and plum slug, Tallulah, La., 1910. 



Lot No. 



Date of 



second 



molt. 



Date of 

 third 

 molt. 



Number 

 of indi- 

 viduals. 



Third 

 larval 

 period. 



123 



Sept. 26 

 Aug. 29 

 Sept. 23 



do.... 



Sept. 28 

 Aug. 31 

 Sept. 25 

 Sept. 26 

 Sept. 25 

 Sept. 28 



2 

 1 

 5 

 4 

 16 

 1 



Days. 

 2 o 



1123 



2 



1127 



2 



1129 



3.0 

 2 



1131 



Sept. 20 



2 







Total and average 



29 



2.1 











Table V. — Fourth larval period of the peach and plum slug, Tallulah, La., 1910. 



Lot No. 



Date of 

 third 

 molt. 



Date of 



fourth 



molt. 



Number 

 of indi- 

 viduals. 



Fourth 

 larval 

 period. 



no. 



Aug. 20 

 Aug. 22 

 Sept. 28 



Aug. 29 

 Sept. 25 

 Sept. 26 



Sept. 25 

 Sept. 28 



Aug. 23 

 Aug. 25 

 Oct. 1 

 Oct. 2 

 Aug. 31 

 Sept. 27 

 Sept. 28 

 Sept. 29 

 Sept. 30 

 Oct. 1 

 Sept. 27 

 Sept. 28 

 Oct. 1 



1 



2 

 1 

 1 

 3 

 1 

 1 

 1 

 3 

 2 

 14 

 1 

 1 



Days. 

 3.0 



112 



3.0 



123 



3.0 



1124 



4.0 

 2.0 



1127 



1.5 



1129 



2.5 

 3.5 

 4.5 

 5.5 

 2.0 



1131 



3.0 

 3.0 







Total and average 



32 



2.8 











Table VI. — Total feeding period of the peach and plum slug, Tallulah, La., 1910. 



Lot No. 



110. 

 112. 

 123. 



114.. 

 1127. 



1131. 



Total and average. 



Date of 

 hatching. 



Aug. 14 

 Aug. 16 

 Sept. 21 



Apr. 11 

 Sept. 19 



Sept. 20 



Date of 



fourth 



molt. 



Aug. 23 

 Aug. 25 

 Oct. 1 

 Oct. 2 

 May 3 

 Sept. 27 

 Sept. 28 

 Sept. 29 

 Sept. 30 

 Oct. 1 

 ...do 



Number 

 of indi- 

 viduals. 



21 



Total 

 feeding 

 period. 



Days. 



9.0 



9.0 



10.0 



11.0 



i 22. 



8.0 



9.0 



10.0 



11.0 



12.0 



11.0 



10.3 



i These 2 were developing during unusually cold weather for the season and are omitted from the 

 average. 



THE PREPUPA. 



After molting for the last time the larva crawls or drops to the 

 ground where it voids the entire contents of the alimentary canal, 

 burrows into the soil from one-half an inch to 3 inches, and constructs 



