442 _  Mound-Making Ants of the Alleghenies. [July, 
A, cava is a brown-colored insect, about one-fifth of an inch in 
length. Specimens were found with fallow ants in Columbia 
Co., Pa.; in Michigan, Maryland and 
Illinois. Those from Illinois were found 
in nests of F. rufa (?) in large numbers. 
One of the ants taken with the beetle 
still holds in its mandibles, firmly clasped 
a even in death. one of these household 
Fic. 7.—Beetles found in nests treasures. The other specimens figured 
of F. Exsectoides. No. 1, Ateme- are destitute of the hair-like tufts, and 
tes cava LeConte. No. 2, Cedius probably serve simply as scavengers, 
Ziegleri LeConte. . - tee 
or are permitted to remain as “ squat- 
ters” in the formicary, for some purpose, the economy of 
which is unknown. Cedius ziegleri LeConte, Fig. 10, 2, was 
taken in a hill of F. exsectoides at Bedford, Pa. It has short elytra, 
the color is brown, the length is one-tenth of an inch. On each of 
the first pair of legs are two spines, one situated (apparently) at 
the base of the femur, the other on the trochanter. The remain- 
ing specimens were also taken at Bedford, Pa., and are an un- 
described species of Homalota, and an unnamed species of 
Oxypoda. They are small brownish insects, with a slight pubes- 
cence. 
Lepidopterous larve with Ants—I introduce here as bearing 
upon the general matter of ant-food, and the relation of ants to 
myrmecophilous insects, the following observation. During the 
early summer of 1877, I had frequent opportunity to note the 
habits of a large colony of black, shining ants, Formica fusca, 
whose formicary is established at the edge of a grove on the 
farm of Mr. George B. Lownes, Delaware Co., Pa., nine miles 
from Philadelphia. The ants were found scattered through the 
woods, within a circuit of many rods from the nest. June 18th, 
I observed a column of these ants ascending a young wild-cherry 
tree, near which grew several tall stalks of the black snake-root 
er bug-bane, Cimicifuga racemosa. While watching the ascend- 
ing column I noticed an ant moving upon the round blossoms 
of this plant. Attracted by some peculiarity in its movements I 
_ fixed my attention upon it, and saw it to be in attendance upon 4 
oe small green grub about one-half inch long, which proved to be 
= the larva of a butterfly, probably some species of Lycænidæ. The 
ae se lower segments of the abdomen were continually gently stroked 
en aR OE eee ee ye ee age eee ye St ee ee er a 
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