-175— 



Later it is found on vegetation in great variety. 



It is now apparent that the corn plant louse {Aphis nitndis) takes 

 its earliest start in spring only in fields in corn the year before: but it 

 may very rapidly mature a winged brood of root lice (in one case in sev- 

 en davs from the planting of the field,) by means of which adjacent fields 

 ma»; be stocked. laboratory experiments and field observations indicate 

 that the root lice are strictly dependent on the ant, Lasius alunus, which 

 mines along the principal roots of the corn, collects the plant lice, and 

 conveys them into these burrows, and there watches and protects them. 

 These ants have nothing to do with the hibernation of the lice, their winter 

 nests never containing them in any form, either in cornfields or in other 

 situations. The facts indicate that the lice hibernate as wingle.ss females 

 in the earth of fields previously infested. 



Specimens of the various larvae were exhibited preserved in spirit. 



Several remarks were made on the retarded development of insects. 



Rev. C. J. S. Bethune of Port Hope, Ont. instanced the same 

 habit which had recently come under his notice in breeding, A. Proni- 

 fthea. 



Prof Forbes in speaking of the attacks of insects remarked that there 

 seemed to be a relation between the presence of the insect and the sup- 

 ply of fruit. 



The President asked if Prof. Forbes had found the terminal segments 

 of wire worms of any value in determining generic distinctions. 



Prof Forbes thought that they could not be relied on as of specific 

 value, but might be of generic importance. 



Prof. L. M. Underwood of Syracuse exhibited a new species of 

 Phrynus sent him from Key West: according to Packard; "Phrynus is 

 at once known by the excessively long whip multiarticulate forelegs 

 which apparently perform the office of antennae; the body is short and 

 broad and has no appendage to the abdomen." 



Various specimens of interest were exhibited by Mr. J. A Mofiatt 

 of Hamilton, Ont.. and Rev. C. J. S. Bethune of Port Hope, Ont. 



On motion the club adjourned to meet at 9 a. m, the following 

 morning in the same place. 



Friday, August 20th, 1886. The club met pursuant to adjourn- 

 ment at 9 a. m. Prof. Lintner in the chair, 1 1 members present. Prof. 

 Forbes read the following paper: 



A Contribution to the Life History 0/ Aphis maidis. Fitch. 

 By H. Garman. 



In studying the life history of the corn plant louse at the beginning 

 of the summer of 1885. a large frame was erected out of doors and so 



