EXPLANATION OF PLATES II AND III. 

 Plate n. 



Pig. i. — Encyrtus bucculatrices Howard. Female. 



Fig. 2. — Gall made by Lasioptera muhlenbergicc, on Muhlenbergia 

 mexicana. 



Fig. 3.— Hippocephalus multi/ineatus Ashmead. Female. 

 Fig. 4.— Lygocerus niger Howard. Female. 

 Fig. 5. — Encyrtus flavus Howard. Female. 

 Fig. 6. — Encyrtus flavus Howard. Male. 



Plate III. 



Fig. t. — Websterellus tritici Ashmead. Female. 

 Fig. 2. — Websterellus tritici Ashmead. Male. 

 Fig. 3. — Pachyneuron micans Howard. Female. 

 Fig. 4. — A/lotria tritici Fiteh. 

 Fig. 5. — Perilitus america?ius Riley. Female. 



Fig. 6. — Illustrating position of cocoon of Perilitus under body of 

 Me gill a macula la. 



Acknowledgements. 



Fig. 1 of Plate II was secured through the kindness of Dr J. A. 

 Lintner, State Entomologist of New York. 



Figs. 2, 5, 6, of Plate II, and Figs, i , 2, 6, Plate III, are from the Ohio 

 Agricultural Experiment Station. 



Fig. 4, of Plate II. and Figs. 3, 4, 5, of Plate III. were received through 

 the kindness of the United States Department of Agriculture. 



Fig. 3, of Plate II. from Prof. E. A. Popenoe, of Manhattan, Kansas. 



