42 
nn „ Htirrl ^necies less abundant, (Schizoneura 
In ^ThTl wastond^ P C^ts. Both the Schizoneura 
Ihos.) was to ] .P - occurred upon the common grass- 
and the Chaitophoius i nd p a nicum, the former upon 
like weeds in the ^11’ l1r) " ‘ the leaves. The Chaitophorus was 
the roots, and the latter P { gragg beneath infested rows 
found, however, only upo 1 , • upon the grass in the 
of sorghum, not a single specimen being seen upon ^ ^ 
bare spaces ot the he , consequently, that this plant- 
itself was not infested, it was clear, cons l ^ from the gra88 
louse passed from ^ 0 “ the other hand, appeared 
both in corn and sorghum fields. 
In corn-fieids adjacent 8 eparated^ a search. 
though in the border of the sorghum.field nearest, this species 
was extremely abundant and decidedly injurious. 
ij-i Urxiria in the vicinity of Champaign wcic visited at 
Several other fi eld nl /V t , all ' t b ree of these plant-lice were 
this time, and m al j gp ecies being frequently massed 
generally distributed, the two aerialspecies o g u anA 
in overwhelming numbers sc. as thicklyto^crowa dot ^ q{ 
the upper leaves, with evide y t he corn plant-louse was 
the P !r,on tte C rootTof ly sorghum, associated with the grass root-louse 
seen upon t • 7 ,\ oirporlv freouently mentioned. In one field 
( ?i “f ,l fourtlf species was Ad upon the leaves, apparently a Si- 
still a fourth »1 rlptpvrnined exactly m the absence of 
phonophora, but not to be determined exactly n f 
U-preserved winged specimen^ Ujas jertamly ^ ^ ^ 
! T Y ts end is briefly characterized on another page. The corn 
plants , anch ehy chaitophorus were also found upon broom- 
S t thisSi; but the rooilouse was not detected there. 
STSd “““ptaHome (4. »«». 
only upon the springing tassels. 
Chaitophorus flavus, n. s. 
[Plate III, Pigs- I— 4 - ] 
DESCRIPTION. 
The genus Chaitophorus, established by Koch in 1854 is es^eciall: 
(lkilmmished by the pilose antenme, the filament of the last joint o 
which" is longer than its basal part, by the large ca " da b > a “ d ^ e y rini 
very short nectaries, wider than long. It is also saia 
Buckton and Thomas to have the antenme 7-jomted, like Aphis 
