99 
the attention of any close observer of the corn root insects, bnt 
never yet numerous enough in our observations to do any per¬ 
ceptible harm. 
The following chronological list shows its dates of occurrence 
in our collections, its forms, its food plants, and attendant 
ants: 
Jan. 20, timothy roots; Lasius; viviparous female. 
Feb. 13, in grass roots; in Lasius colony; oviparous female. 
Mar. 9, sod, by fence, near corn field; Lasius niger. 
££ 21, in last year’s corn hill; burrows of Lasius. 
“ 23, in last year’s corn hill; burrows of Lasius. 
“ 26, sod; several nests of Lasius niger. 
“ 29, sod, along fence between corn field and pasture; L. 
niger ; eggs. 
Apr. 1, grass roots and a dicotyledonous weed; large nest 
Lasius mixtus. 
“ 4, roots of shepherd’s purse; Lasius niger. 
“ 5, breeding cage; young, from eggs of Mar. 29. 
£ * 6, on roots of old corn and under boards. 
“ 10, roots of shepherd’s purse; Formica fusca gagaies. 
“ 19, grass roots, in meadow; Lasius niger. 
“ 26, in blue-grass sod; frequent in nests of Lasius niger. 
May 7, grass; Lasius nest. 
“ 8, timothy roots. 
“ 9, roots of young oats in corn ground. 
“ 19, sod; Lasius niger. 
“ 19, on corn roots in old sod ground, one with beak in root; 
Lasius niger. 
“ 21, on corn roots in grass ground; Lasius niger. 
“ 21, on corn roots in grass ground. 
“ 21, on corn roots, meadow last year; one killed by mite; 
Lasius niger. 
<£ 24, on corn roots, grass ground; Lasius niger. 
“ 25, on young grass roots. 
££ 28, on corn roots; Lasius niger. 
“ 29, on corn roots; Lasius niger. 
“ 31, in Lasius nest. 
“ 31, corn roots, sod ground; Lasius; pupa, showing wing- 
pads. 
“ 31, in sod; Lasius niger. 
“ 31, on blue-grass roots; in Lasius nest; pupae. 
June 1, young corn roots and base of stalk, sod ground, one 
fourth the corn infested. 
“ 1, corn roots, sod ground. 
“ 5, breeding cage; winged female from pupae of Mar. 31. 
“ 6, corn roots, abundant, sod ground; Solenopsis debilis . 
££ 13, corn roots, sod ground. 
July 14, clover roots. 
“ 15, on roots of corn. 
£f 28, on roots of corn. 
Aug. 11, on roots of clover (twice). 
