THE COTTONY GRASS SCALE. 177 



PARASITES. 



A large number of egg sacs was collected from June grass in 

 a meadow near Portland the first of August, 1904. For the 

 most part the material was cut close to the sacs, with only a bit 

 of the grass blade left attached. There was included, however, 

 a little infested grass, cut stalk and all, a circumstance which will 

 doubtless account for the presence (in the list appended) of 

 Lasioptera and Isosoma, insects of grain, or grass-stalk inhab- 

 iting proclivities. The single specimen of Eiipelmus may not 

 necessarily, therefore, have been parasitic upon the grass scale 

 itself. Considering the fact that some species of Oscinis are 

 stem maggots and that the larvae of many species of the same 

 genus are reported as preying upon Coccidae,* the economic 

 position of the two specimens of this insect may also be open to 

 question at present. The remaining species, however, are bred 

 from egg sacs of Eriopeltis festuccE. No. 11 and No. 12 were 

 reared from material collected on Isle of Springs, August 9, 

 1905. 



These insects were submitted to Dr. L. O. Howard, chief of 

 Bureau of Entomology, U. S. Department of Agriculture, whose 

 kindness in examining them makes this report possible. All 

 of the Hymenoptera were examined by Dr. W. H, Ashmead, 

 U. S. National Museum, to whom thanks is also due. The 

 following insects are listed as Dr. Howard reported them, 

 except for the addition of the number of specimens reared in 

 each case. 

 • No. I. Leucopis nigricornis Egger, 30 specimens. 



2. Bunotus n. sp. 36 specimens. 



3. New genus near Phaenodiscus in Mirini. 32 speci- 



mens. 



4. Microterys n. sp. 4 specimens. 



5. Probably males of No. 3. 18 specimens. 



6. Lasioptera sp. i specimen. 



7. Eupelmus sp. i specimen. 



8. Isosoma sp. i specimen. 



9. Lasioptera sp. i specimen. 



10. Oscinis sp. 2 specimens. 



11. Eunotus n. sp. How. Many specimens. 



12. Eunotus n. sp. How. Many specimens. 



* U. S. Dept. Agr., Div. of Ent., Bui. 32, p. 35. 



