38 



218. DIABROTICA SOROR Leo. 



[Larvae breed in roots. "Insect Life," Vol. ill, p. 468.] 



219. SPHENOPHORUS PERTINAX OliV. 



[Larvae breed in roots.] 



220. THE CLAY-COLORED BILL— BUG. 



Sphenophorus ochreus Lee. 

 [Larva? breed in roots.] 



Chief Articles: Forbes, 16th Eept. Ins. 111., p. 58; Webster, "In- 

 sect Life," Vol. ii, p. 132. 



221. THE SCULPTURED CORN BILL BUG. 



Sphenophorus sculptilis UMer. 

 [Adults iujure sprouting plants.] 



Eemedies: Protect birds; use of Paris green about the base of the 

 plants. 



Chief Articles: Riley, 3d Eept. Ins. Mo., p. 55; Comstock, Eept. 

 Dept. Agric, 1880, pp. 272-273 ; Lintner, 1st Eept. Ins. K Y., pp. 253-263 ; 

 Forbes, 16th Eept. Ins. 111., p. 58. 



222. SPHENOPHORUS PLACIDUS Say. 



[Larvae breed in roots.] 



Eemed Y : Same as for ETo. 21. 



Chief Article: Forbes, 16th Eept. Ins. 111., p. 58. 



223. CORN BILL-BUG. 



Sphenophorus robustus Horn. 

 [Larvae breed in roots.] 



Eemed y : Plow up and burn the stubble. 



Chief Articles: Eiley, Eept. Dept. Agric, 1881, pp. 138-142; 

 Forbes, 16th Eept. Ins. 111., p. 58. 



224. SPHENOPHORUS CARIOSUS Oliv. 



[Larvae breed in roots.] 



225. SPHENOPHORUS PARVULUS Syll. 



[Adults injure sprouting corn.] 



Hemipfera. 



226. CHAITOPHORUS FLAVUS Forbes. 



[Lives on roots and leaves.] 



Chief Article : Forbes, 13th Eept. Ins. 111., p. 42. 



227. CORN APHIS. 



Aphis maidis Fitch. 

 [Lives on roots and leaves.] 



Eemedy : Kerosene emulsion. 



Chief Articles: Forbes, 13th Eept. Ins. 111., p. 46; Garman, 14th 

 Rept. Ins. 111., p. 23. 



