APATURA II. 
final change is effected in the same manner as in Celtis , and the chrysalis is also 
supended by a pad of booklets. 
Clyton is dimorphic in both sexes, but not seasonally-dimorphic, as might be 
the case were there two broods annually. Of twenty-one butterflies raised by 
me from the egg, eight were the form Ocellata, namely: 4^, 4 9 ; of Proserpina 
thirteen, 8^, 5 9 . 
In the fall of 1873, I received a few larvae of Clyton from Mr. Riley, in leth¬ 
argic state. These began to move 2d May, 1874, but every stage was pro¬ 
longed, and the first chrysalis was not formed till 7th July, thirty-eight days after 
the corresponding change occurred with the larvae found at Coalburgh. As all 
the attendant circumstances were apparently identical in the two cases, I can 
give no explanation of this singular phenomenon. The duration of the chrysalis 
stage was same in both cases, about ten days. 
The contrast between the two species Celtis and Clyton is striking as relates to 
their preparatory stages. The eggs and chrysalids are nearly identical in form, 
and the caterpillars have a general resemblance. But the eggs of Clyton are 
laid in clusters of hundreds, those of Celtis either singly or in lots of from five to 
twenty. The larvae of Celtis are gregarious, but are satisfied with nearness with¬ 
out contact; those of Clyton require actual contact and assemble in groups to 
which all scattered ones are attracted. I have frequently separated a group, but 
in a few hours all its members were together again. Celtis completes its history 
in one summer brood, though part of this may hybernate, and it has a second, 
which always hybernates. Clyton, in West Virginia at least, has no second 
brood, but all the larvae hybernate. 
Of the habits of the butterfly I am unable to speak from my own knowledge, 
but I am informed by correspondents that it behaves much like Celtis. The 
larvae of the two frequent the same tree, and Mr. Charles Dury, of Avondale, 
Ohio, tells me that he has taken as many as sixty larvae of the two species at 
same time from a small Hackberry. He writes “ I have often taken Clyton, 
sometimes on trees from which there was an exudation of sap, and sometimes on 
rotten apples. But in most cases it is to be seen in the woods. Its movements 
are less lively than those of Celtis .” 
As is the case with Celtis, the larvae of Clyton feed upon the thickest leaves. 
When winter approaches, they probably, to some extent, seek shelter on the 
rough, corky bark of the Hackberry, though many no doubt fall with the leaves 
and perish. 
I know of no other food plant for this species than the Celtis occidentalis. Dr. 
Boisduval gives Prunus as one of them, but I have been unable to verify the 
statement, even when the larvae have been made to fast for hours. 
