144 
Surface covered with short grayish pubescence; base of thorax not 
channeled; penultimate ventral of male with a broad transverse im¬ 
pression, a slightly oblique tuberosity at each end in front, last ven¬ 
tral feebly concave, broadly emarginate at apex; clypeus deeply 
emarginate; thorax very densely granulate-punctate, " median lino 
smoother, slightly elevated. 19-23.5 mm. ( ciliata , Lee.)... .ilicis, Knoch. 
32 Clypeus emarginate; surface with short yellowish recumbent hair; 
penultimate ventral of male vaguely concave at middle; thorax with 
margin coarsely serrate, coarsely and densely punctate. 17-20 mm. 
. crenulata, Frohl. 
Clypeus entire.. 
33 Subcylindrical, rufotestaceous; clypeus emarginate; thorax moderately 
punctate, with smooth median line; last ventral of male longitudinally 
subcarinate at middle, anterior margin elevated each side, penulti¬ 
mate with sharply limited cupuliform concavity, its margin rising 
into an acute rugose tuberosity on each side, hind tibial spurs slen¬ 
der. 15-16 mm. inepta , Fabr. 
34 Surface with yellowish hair long on head, thorax, and about sfcutellum, 
short on remainder of elytra; thorax coarsely, closely punctured, last 
two ventrals of male broadly transversely impressed, anterior margin 
of last ventral elevated, penultimate with a short acute transverse 
carina near the front margin. 11.5-15 mm. tristis , Fabr. 
THE GREEN JUNE BEETLE. 
(Allorhina nitida , L.) 
(Plate XIIL, Fig. 7.) 
The larva of the green June beetle, Ailorhina nitida , commonly 
known as a white grub where it occurs, is distinguishable from 
the species of Lachnosterna and Cvclocephala by its somewhat 
larger size when full grown; by the" thick covering of short stiff 
hairs easily visible to the naked eye; but especially by the dif¬ 
ference in its method of locomotion upon a'hard surface. The 
com pa on white grubs (Lachnosterna) creep only by means of 
their leg’s, dragging the heavy abdomen clumsily "along; but the 
larva of the green June beetle, when thrown upon a hard sur¬ 
face, turns immediately upon its back, and moves somewhat 
easily in this position by alternate contraction and expansion 
of the segments of the body, using the stiff hairs upon the back 
as an aid. 
This is a southern species, and in the Southern States largely 
replaces Lachnosterna, its larva being there known as the white 
grub. In Central Illinois it occurs but rarely, but becomes no¬ 
ticeably abundant in the southern part of the State, where it 
has been occasionally reported as injurious in a small way. 
Although it has not been found in corn fields, its food and habits 
are such as to make it altogether likely that under favoring cir¬ 
cumstances it might injure corn in the same manner as the 
Lachnosterna larva—or rather as the larva of Cyclocephala, 
which it more closely resembles in its life history. The grub is 
normally a grass insect, but infests likewise strawberry fields, 
and has been found by Dr. Riley to feed in confinement upon 
the roots of wheat. It seems to be less dependent upon living- 
vegetation than even the white grubs, apparently living much 
more generally upon a rich soil. Indeed, the beetles seem to be 
