670 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



Few specimens of this Phytoptus have been seen, though the growths 

 liave been carefully searched for them. One of those examined had 45 

 transverse strine, 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. AmpMpyra pyramidoides Guen. See p. 171. 



3. Platysamia ceeropia (Linn.) (Riley's MS. notes.) 



4. Lithophane cinerosa Grote. Thaxter (Psyche, p. ii, p. 35). 



5. Oracilaria 7iegundella Chamb. Larva curls down the edge of a leaf. 



6. Caccecia semiferana (Walk.) 



Order Hemiptera. 



7. Pulvinaria inmimerabilis Rathvon. (Comstock, N. Amer. Ent., i, 



p. 25.) 



8. Ghaitophorus negimdinis 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 Buprestidje of U. S. Trans. Am. Phil. Soc, 1859, p. 230.) 



2. Gyllene antennatus White. "Lives in the mesquite wood," Arizona. 



Horn (Trans. Am. Ent. Soc, viii, p. 135). 



3. Bruchns uniformis Le Coute. Colorado desert ; abundant in the 



pods of Prosopis and Strombocarpus. (Le Conte.) 



4. B. prosopis Le Conte. Found with the preceding. (Le Coute.) 



