604 FIFTH BEPOBT OF THE ENTOMOLOGICAL COMMISSION. 
2. TlIK T.VU NY F.MI'FI 
Apatura clytoii Bd. LeC. 
This butterfly is a larger and more showy one than the Eyed Empe- 
ror and it extends farther north and east, Its habits are similar and I 
have frequently found the larvae of both species feeding together on the 
same tree. 
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*- ct - o 
Fig. 19?.— A i at»ra clyton.- a, eggs : b. larva; c, ehl 
imago, male, the dotted line showing form of female — all natural 
size. After Riley. 
It is less common than A. celtis and Boisduval gives Prunus as the 
food-plant of the species; but no one since has recorded it as occurring 
on trees of that genus, and, as I have already recorded, young larva? 
refused to feed on Plum leaves and died rather than eat them. 
The eggs of this species are similar to those of celtis, and differ mainly 
in being narrower on the crown, but they are " invariably deposited in 
dense patches of from 300 to 500, and two, or more often three, tiers 
deep." 
The structural differences between the young larva? of the two species 
are fully set forth in the article alluded to. 
••The larvae are more or less gregarious up to the third molt, after 
which they scatter. The habit, after they scatter, of hiding within 
leaves drawn around them, is more determined than in A. celtis; and the 
young of the second brood fall with the leaf, and hibernate huddled to- 
gether in companies of five and upwards (Fig. 199, q). They have a 
habit, before separating, of feeding side by side, eating the leaf from the 
tip downward, but leaving the stouter ribs. Spinning a thread wher- 
ever they go, they often, in traveling from leaf to leaf, make quite a 
pathway of silk ; and if the branch be suddenly jarred, they will drop 
and hang suspended in mid-air, and, after re-assurance, climb up again 
with the thoracic leg>." 
Parasites. — My notes would indicate that there were two parasites 
affecting the eggs of this butterfly, one of them not preserved, and re- 
ferred to the Trichogramnmhe in my fifth Missouri report. The other, 
since bred in numbers, proves to be a Proctotrupid belonging to the 
