40 
altogether likely that they will be found affected by the same in- 
sects and in the same ways. Indeed, as far 4s our present knowledge 
of the matter goes, this has proved to be strictly true. 
LITERATURE. 
In Bulletin 1 of the Division of Entomology of the United States 
Department of Agriculture, published in 1883, a correspondent of 
the Department, Dr. Neal, of Archer, Florida, reports the injury of 
young plants of sorghum (without specifying which species is in- 
tended) by the larve of Agrotis (cut-worms). The ‘‘weevil” is also 
said by Dr. Neal to be very bad in young broom-corn in Florida, 
and larve of Heliothis are reported by him to attack the leaves, 
buds, young shoots, silk and young ears. There is evidently some 
inaccuracy in this item, since broom-corn has neither ears nor silk, 
and it seems likely that this remark was intended to apply to ordi- 
nary Indian corn. 
In the report of the United States Entomological Commission for 
1877, the fact is noticed that sorghum is commonly remarkably free 
from injury by grasshoppers, even the voracious and almost omniv- 
orous Colorado grasshopper ordinarily passing it by. 
The fact has been repeatedly mentioned by writers on the chinch- 
bug, that both broom-corn and sorghum were peculiarly liable to the 
injurious attentions of this insect, as it seems to decidedly prefer 
them to Indian corn. 
Mention has also been made by Prof. Riley and others, of injury 
to sorghum by the army worm; and Prof. Thomas, in the elaborate 
article on plant lice, published in the Sth report of the State Ento- 
mologist of [llinois, mentions the occurrence in Europe of a plant- 
louse (Sipha) upon sorghum, which he believes likely to infest the 
plant in this country also. 
In a valuable paper on the plant-lice of Italy, by Giovanni Pas- 
serini,* mention 1s made of the four following species of these 
insects infesting sorghum in that country: Toxoptera graminum 
occurs upon the under surface of the leaves of a great variety of 
graminaceous plants, including both corn and sorghum; Aphis 
avene,+ the common grain Aphis, well known in Illinois, oceurs in 
autumn upon various species of sorghum, including Sorghum saccha- 
ratum, beneath the sheaths of the superior leaves at the base of the 
panicle of seeds; Sypha maydis is said to occur rarely upon the 
under surface of the leaves of Sorghum saccharatum; and Pemphigus 
boyerit is found from June to December upon the roots of a great 
number of graminaceous species, including all the cultivated varieties 
of sorghum. 
Finally, in the Third Biennial Report of the Kansas State Board 
of Agriculture (1883), Prof. A. E. Popenoe gives an account of the 
appearance of the corn plant-louse (Aphis maidis) on sorghum in 
that State. 
= 
* Flora degli Afidi Italiani, finora osservati dal Prof. G. Passerini. (“Dal Bulletino 
Entomologico, Anno III.”) 
+ Properly called Siphonophora granarie, Kby. 
This species of Passerini is believed by Lichtenstein to represent two of the stages 
of Schizoneura corni, Koch. See American Entomologist, 1880, p. 178. 
