ARTICLE IV.-ON SOME CLOVER INSECTS. 
1. Cymatophora crepuscularia , Tr. 
Order Lepidoptera. Family Phal^nid^:. 
(Plate VI. Fig. 5.) 
Larvae from which the above was bred were taken on white clover 
at Normal, June 21, the imagos emerging July 10. The larvae were 
an inch long, slender, with only four prolegs. The head is widely 
bilobed and reddish brown above, yellowish varied with reddish 
brown in front, with two small approximate black spots on the mid¬ 
dle of the front. The body is green, thickly covered with white 
granulations, with some black ones intermixed, and has an obscure 
reddish dorsal stripe. The posterior margins of the middle segments 
are narrowly bordered with yellow. On the penultimate segment is 
a large transverse blackish spot, with two small kidney-shaped yel¬ 
low spots near its middle, approaching each other posteriorly. The 
legs are pale brown, blackish at base; prolegs pale brown, blackish 
at base; prolegs black without, pale within; spiracles brown. 
The same larva occurred in our collections on the rose and the 
common locust; taken from the former June 20, and from the latter 
July 4. We also collected it July 25, from the box elder (. Negundo 
aceroides), the specimen pupating August 4, and emerging August IB. 
2. The Clover Bark Louse. 
(Coccus tr ifolii, n. s.) 
Order Hemiptera. Family Coccm®. 
(Plate VI. Fig. 6.) 
On the 3d of May, at Normal, there occurred on the roots of 
white clover examples of a root coccid, resembling Rhizobius in gen¬ 
eral appearance, but differing from it in the antennae, and especially 
in the tarsi and tarsal claw. They were protected by a small yel¬ 
low ant, Lasius flavus, in whose nests they occurred, and were 
carried away by them like plant lice, when the nest was exposed. 
