40 
For general account see Pergande, Bul. 44, Div. Ent., U. S. Dept. Agric., pp. 18-21, 
1904. : is 
Exuisir: Figure. 
THE ENGLISH GRAIN-APHIS. 
Macrosiphum granaria Buck. 
(Formerly Nectarophora and Aphis. Attacks green foxtail, meadow, and orchard 
grass, oats, red-clover, red top, rye, wheat, and wild rye. ) 
For general account see Pergande, Bul. 44, Div. Ent., U. S. Dept. Agric., pp. 13-18, 
1904. 
Exuisit: Figure and work; parasite, Lysiphlebus testaceipes Cress. (figure); and 
enemies, Anatis 15-punctata Ol.; Coccinella sanguinea Linn.; Hippodamia parenthesis 
Say; Podabrus tomentosus Say; Sphxrophoria cylindrica Say; Syrphus americanus 
Wied. 
THE EUROPEAN GRAIN-APHIS. 
Siphocoryne avene Fab. 
(Formerly Nectarophora and Aphis. Attacks apple, burdock, celery, cnoKe-cherry, 
dogwood, grasses, oats, rye, wheat, and other plants. ) 
For general account see Pergande, Bul. 44, Div. Ent., U. 8S. Dept. Agric., pp. 5-13, 
1904. 
Exuisit: Figure. 
THE CHINCH BUG. 
Blissus leucopterus Say. 
(Injures cane, corn, oats, rye, wheat, etc. ) 
For bibliography, 1785-1888, see Forbes, App. to 16th Rept. St. Ent. Ill., pp. 1-102, 
1894. Fcr general articles see Forbes, 16th Rept. St. Ent. Ill., pp. 1-57, 1894; 
Webster, Bul. 15, n. s., Div. Ent., U. S. Dept. Agric., 82 pp., 1898. 
Exursir: Eggs, nymph, adult, and figure. 
THE GRAIN LEAF-HOPPER. 
Diedrocephalus flaviceps Riley. 
For account of D. mollipes see Osborn & Ball, Bul. 34, lowa Agric. Expt. Sta., p. 
614, 1897. 
Exursit: Adult. 
THE DESTRUCTIVE LEAF-HOPPER. 
Cicadula exitiosa Uhl. . 
For general account see Comstock, Rpt. U.S. Comm. Agric., 1879, pp. 191-193, 1880. 
Exursir: Adult. 
THE WHEAT SAWFLY. 
Dolerus arvensis Say. 
For general account see Riley and Marlatt, Insect Life, Vol. IV, pp. 171-172, 1891. 
Exuipir: Adult and figure. 
THE GRASS SAWFLY. 
Pachynematus extensicornis Nort. 
(Formerly Nematus marylandicus. ) 
For article under NV. marylandicus see Riley and Marlatt, Insect Life, Vol. IV, pp. 
174-177, 1891. 
Exuisir: Adult and figure. 
THE WESTERN GRAIN SAWFLY. 
Yephus occidentalis Marl. 
For short article see Riley and Howard, Insect Life, Vol. II, p. 286, 1890. 
Exuipsit: Adult, work, and figure. 
