Bui. 63, Part II, Bureau of Eniomoiog-y, U. S. Depx. of Agriculture. 



Plate I. 



Work of Lixus musculus and Orthoris crotchii. 



Fig. 1. — Gall of Lixus musculus and exit hole of adult on stem of Poliigonum pennsylvanicum. 

 Fig. 2. — Gall of Lixus musculus and entrance hole (closed) of pyralid caterpillar on stem of 

 Polygonum. Fig. 3. — Pod of Mcntzelin nuda, showing two eg^ 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.) 



