Bui. 63, Part II, Bureau of Entomology, U. S. Depi. of Agriculture. 



Plate I. 



Work of Lixus musculus and Orthoris crotchii. 



Fig. 1. — Gall of Lixus miisrirfus and exit hole of adult on stem of Polygonum pennsylvanieum. 

 Fig. 2.— Gall of Li.nts mtiscuhis and entrance hole (closed) of pyralid caterpillar on stem of 

 Polygonum. Fig. 3.— Pod of Maitzdui iuhIh, showing two egg punctures of Orthoris crotchii. 

 Fig! 4.— Pod of Mentzelia opened, showing a cluster of Orthoris crotchii cells, and the cocoons 

 of Tetrastichus. Figs. 5, 6. — Interior of pod of same, showing several cells of Orthoris crotchii. 

 Fig. 7.— An isolated cell of Orthoris crotchii, showing the manner in which the seeds are 

 eaten. (Original.) 



