40 



185. GRASS WORM. 



Laphygma fruglperda Sm. & Abb. 

 Syn. Prodenia atdumiialis Riley. 



[Larva, chrysalis, adult moth.] 



Remedies: Flooding. 



Chief Article: Riley, 3d Rejit. Ins. Mo., p, 109-116; Amer. Ent., 

 V. 1, p. 363-365. 



IHrSECTS AFFECriXG IJrOIA:^' CORA'. 



(^Zea mays.) 



186. CHINCH BUG. 



Bllssus leucopterus (,Say.) 



[Adult: figures in all stages from Riley's 7th Mo. Report.] 



Remedies: Burning stalks ; kerosene emulsion. 



Chief Articles: Walsh and Riley, Amer. Ent., vol. 1, p. 16&-177, 

 194-199 ; Riley, 2d Rept. Ins. Mo., p. 15-37 ; 7th do., p. 29-71 ; Thomas, 

 Bull. No. 5, U. S. Ent. Comm., p. 44. 



187. SPHENOPHORUS PARVULUS Gyll. 



[Adult weevils.] 



183. CORN BILL-BUG. 



Sphenophorus robustus Horn. 



[Injured roots, adult weevil: figures of all stages from Riley's Report for 1881.) 



Remedies: Burning stalks and stubble; arsenical mixtures. 

 Chief Article: Riley, Rept. Dcpt. Agric, 1881, p. 138-142. 



189. CORN SPHENOPHORUS. 



Spheiiophoras seufpti/l-s Uliler. 

 Syn. Sphenophorm zecu Walsh. 



[Adult weevils; figures of the same from Riley's 3d Mo. Report.] 



Remedies: Same as for No. 188. 



Chief Articles : Riley, 3d Rept. Ins. Mo., p. 59 ; Comstock, Rept. 

 Dept. Agric, 1880, p. 272-273 ; Lintner, 1st Rept. Ins. N. Y., p. 258-263. 



190. SPHENOPHORUS PERTINAX. Oliv. 



[Adult weevils.] 



Remedies: Same as for No. 188. 



