APATURA I. 
under the microscope, a mottling of vinous and green. (Fig. e 2 , e 3 .) The last 
fall brood all assume this color, and hybernate also after the second moult. And 
the earlier broods sometimes all hybernate, as I observed last season (1874). 
Celtis is common in certain localities in West Virginia, usually, if not always, 
near streams, along the banks of which the food-plant of its larva grows. This 
is the Hackberry, Celtis occidentalis, a small tree much resembling the Elm in 
the shape and style of its leaves and the roughness of its bark; found, accord¬ 
ing to Gray, from New England to Wisconsin and southward. Probably the 
range of the butterfly is nearly coextensive with that of the tree, though the 
former must be rare in New England and eastern New York. Prof. H. W. Parker 
states that it is found in Massachusetts, along the banks of the Connecticut 
River, but is not common. Throughout the Mississippi valley it is abundant, 
and I have received many specimens from Texas. It has not been taken, so 
far as I know, in the Rocky Mountains, nor in New Mexico or Arizona, although 
Leilia inhabits the latter State. Celtis is exceedingly alert, restless, and inquisi¬ 
tive, active on the wing, but without sustained flight, and darts from one object 
to another so swiftly that the eye can scarcely follow it, alighting but for an in¬ 
stant on tree trunk or leaf, the dress of one passing, or the traveller’s horse. 
More than once it has sprung upon the net which I was carrying. Its usual 
attitude, is expressive of its disposition, the wings erect, the head and antennae 
raised, suspicious of surprises. But it will haunt a favorite spot for days, and the 
collector has only to wait patiently a while and it may be captured. It is readily 
attracted also by a sugared bait, and a string of dried apples, saturated with 
syrup and suspended among the branches of the tree which it frequents, may be 
employed to advantage. Occasionally, I have seen it upon flowers, but a rotten 
apple or fallen grape is much more to its taste, and especially, if there is any 
decaying or fetid animal matter in the vicinity, it will greedily settle upon it, 
and then loses all sense of danger and may be covered by the net without even 
attempting to rise. 
Very early in the season a few faded and broken females of Celtis are to be 
seen, the survivors of the last year’s broods. The caterpillars also hybernate, prob¬ 
ably hidden among the corky ridges of the bark of the tree, which in hue 
their winter coating closely resembles. It has been conjectured that they fall 
with the leaf, and attached by a web to its under surface, so pass the winter on 
the ground, and in the Northern States, under the snow, ready to discover the 
tree and ascend it on the first coming of spring. It is not unlikely that many of 
the hybernating caterpillars do Ml with the leaves, which are detached by the 
first frosts, and carry with them also the newly hatched larvae, or those of the 
