75 
lation ; that is to say, they are never worms, grubs or maggots, and 
rver undergo those remarkable changes which transform the grub 
ito a beetle, the caterpillar into a butterfly, or the maggot into a fly. 
; ie l&rva? &ud pupae are similar to the perfect insect in form and hab- 
'} although they frequently cast their skins, and winged speci- 
ms gradually acquire these, organs, there is no true dormant pupae 
- chrysalis state, as we find in many other insects. 
In the autumn, as a very general rule, the last brood consists of 
nged specimens, both males and females. These pair, soon after 
aich the male dies; the female deposits her eggs, after which she 
io dies Early in the spring, as soon as the sap begins to flow, these 
gs hatch and the young lice at once insert their tiny beaks into the 
mu ea * on they are situated and begin to pump up the 
o. 1 hey wander but little, their entire time being devoted to feed- 
g; hence they grow rapidly and soon come to maturity. These fe- 
B.les, by some strange provision of nature, are capable of producing 
Ler individuals without the intervention of the males, and instead 
depositing.eggs, as the last fall brood, are usually viviparous bring- 
> fo r th llv * n g young- These are likewise all females, similar to 
l»se pom which they sprang, and they, in turn, produce a similar 
, in the same anomalous manner. This process is repeated again 
1 again during the summer and until in the fall, through some six 
beven or even, more generations. The last fall brood presents a re- 
rkable variation from this process as it usually consists chiefly of 
j es and females which acquire wings. These, as previously stated, 
•' r pairing deposit eggs which remain over winter, 
n the present report it is unnecessary forme to mention or describe 
G . ..f r species than the Corn Plant-louse (Alphis maidis ) which was 
gma.Hy described by Dr. Asa Fitch, and subsequently more thorough- 
’tudied.by Mr. Walsh, former State Entomologist, and which I have 
>ad during the pa,st season in considerable numbers on the corn in 
southern portion of the State, feeding on parts of the plant hith- 
’> not known to be infested by them. 
THE maize OR corn aphis— (Aphis maidis.') Fitch * 
his species, which appears to be different from the one infesting 
Maize or Indian corn in Europe, was formerly supposed to confine 
■.Hacks to the stem or peduncle which bears the ear, the most vital 
nt,so far as yield is concerned, of the entire plant: but Mr. Walsh 
trwards found Aphides infesting the roots, which, having reared to 
•perfect or winged state, he was satisfied belonged to this species. 
Minately I have had an opportunity during the past year of study- 
;this species and of adding further evidence on this point and also 
> r, new facts in reference to its habits. 
give first the characters as presented by Fitch and Walsh, and also 
c specimens obtained during the summer from a 
irent part of the plant. 
