Vol. xxx1J ENTOMOLOGICAL NEWS 7 
Chrysobothris harrisii Hentz. Adults were reared in June from 
small branches of Virginia pine (Pinus virginiana) collected at Hummels- 
town, Pa. 
Actenodes acornis Say. From material collected at Hummelstown, 
Pa., adults were reared as follows: On June 15, from the wood of dead 
red maple (Acer rubrum); on June 24, from dead beech (Fagus americana) ; 
on June 6, from dead black birch (Betula lenta); on June 10, from dead 
hickory branch; on June 15, from dead black oak (Quercus velutina). The 
larvae work through the heart-wood of the host-plants, often entirely 
riddling them. 
Acmaeodera culta Web. On September 7, a living adult was chopped 
from a dead hickory branch at Cresco, Pa. Adults were reared August 10 
from dead white oak (Quercus alba) branch collected at Hummelstown, Pa. 
Ptosima gibbicollis Say. In the vicinity of Hummelstown, Pa., this 
species breeds in redbud (Cercis canadensis), often attacking living trees, 
hastening their death and decay. The larvae work in the heart-wood 
of the tree and the adults which appear in the spring mature in the fall 
and pass the winter in the pupal cells. 
Eupristocerus cogitans Web. Forms galls on alder (Alnus rugosa 
and A. incana). The egg, which is covered with a chitinized protective 
covering, is deposited at a node, or at a point where the bark is rough. 
The egg hatches and the young larva goes beneath the bark after which 
it works down the stem for a short distance. It then encircles the stem, 
which injury later forms a gall on the plant. The life history extends 
over a period of two years, and the pupa cell is made at the top of the 
gall. 
Agrilus juglandis n. sp. 
Form and color of A. masculinus. Antennae greenish, not quite reach- 
ing beyond the middle of the prothorax, serrate from the fourth joint; 
head slightly convex, a feeble occipital impression, more distinct in the 
female; front densely punctate, becoming slightly strigose on occiput, 
middle of front to clypeus covered with long white pubescence. 
Prothorax wider than long, narrowed at base, sides in front arcuate, 
lateral margin sinuate, hind angles with a well defined carina in both 
sexes; disk convex, with an oblique lateral depression on each side, two 
depressions on median line as in A. oliosus; surface transversely strigose. 
Scutellum transversely carinate, surface granulate. Elytra slightly sinu- 
ate behind the humeri, dilate behind the middle, apices separately rounded 
and serrulate; disk with a faint costa on each side, basal depressions 
shallow, sutural margin elevated behind the middle; surface closely im- 
bricate-granulate. Body beneath more shining than above, prosternal 
lobe broadly emarginate; prosternal process broad, slightly narrowing, 
acute at tip. Pygidium without a projecting carina. First joint of 
hind tarsus as long as the following three joints: tarsal claws deeply 
