670 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
Pew specimens of this Phytoptus have been seen, though the growths 
have been carefully searched for them. One of those examined had 45 
transverse stria*, and was .005 inch long. 
The galls or cecidii consist of mats of tangled white hairs on the 
under side of the leaves, situated in slight concavities; on the upper 
side of the leaves the cecidii are seen as correspondingly slight convex- 
ities on the surface. The younger leaves and those of shoots at the 
base of trees are sometimes almost entirely converted into cecidii, the 
peculiar hairs appearing even on the upper side of the leaves. Such 
leaves never expand, but curl up and seem, from the abundance of the 
hairs, to be clothed with a fine mealy substance. These growths are 
similar to cecidii of certain oaks. 
The growths are very abundant on box elders planted for shade on 
the streets of Normal, 111., and have been seen on young trees in the 
nurseries of the neighborhood. 
Order Lepidoptera. 
2. Amphipyra pyramidoides Guen. See p. 171. 
3. Platysamia cecropia (Linn.) (Riley's MS. notes.) 
4. Lithophane cinerosa Grote. Thaxter (Psyche, p. ii, p. 35). 
5. Gracilaria negundella Chamb. Larva curls down the edge of a leaf. 
6. Cacwcia semiferana (Walk.) 
Order Hemiptera. 
7. Pulvinaria innumerabilis Rath von. (Comstock, N. Amer. Ent., i, 
p. 25.) 
8. Chaitophorus negundinis Thomas. (In Illinois in June, Miss Smith, 
Thomas' Eighth Rept. 111., p. 103.) 
9. Lecanium acericola Walsh and Riley. See p. 425. 
Order Coleoptera. 
10. Chrysobothris femorata Lee. (Riley's 7th Rep. Ins. Mo.) 
INSECTS INJURIOUS TO THE MESQUITE. 
Prosopis. 
Order Coleoptera. 
1. Chrysobothris octocola Le Conte. Texas, Arizona, and Colorado 
River, of California ; lives in species of Prosopis. (Le Conte, 
Rev. of BuprestidaB of U. S. Trans. Am. Phil. Soc, 1859, p. 230.) 
2. Cyllene antennatus White. "Lives in the mesquite wood," Arizona. 
Horn (Trans. Am. Ent. Soc, viii, p. 135). 
3. Bruchus uyiiformis Le Conte. Colorado desert ; abundant in the 
pods of Prosopis and Strombocarpus. (Le Conte.) 
4. B. prosopis Le Conte. Found with the preceding. (Le Conte.) 
