=Draeculacephala reticulata= Sign. Rather common at Charleston and Sikeston during July and August and September, on corn, alfalfa and grasses. Taken at Chillicothe, Sept. 6, Stanberry, Sept. 7. The last two records extend the distribution of this jassid to north of the Missouri River, a fact which is interesting in view of the distribution recorded by Prof. Osborn in Bull. 108. Bur. of Ent. =Draeculacephala angulifera= Walker. Quite common on grass at Charleston. =Draeculacephala mollipes= Say. Abundant throughout the state. All stages present from April to November. Of great economic importance. A decided pest to young grains and grasses. Known to feed on an innumerable list of plants and shrubs, field crops, and ornamentals. Adults migrate in large numbers. About the most common jassid in Missouri. =Draeculacephala noveboracensis= Fitch. Taken on grass at Charleston. =Helochara communis= Fitch. Swept from wheat on many warm, sunny days during the winter. In July collected from alfalfa. Recorded only from Mississippi County. =Gypona 8-lineata= Say. Occurs throughout the state. Has special liking for shady and damp places. Appears to be essentially a grass feeder. =Gypona flavilineata= Fitch. Swept from grass lands at Chillicothe. =Gypona cana= Burm. Taken with G. flavilineata. =Gypona pectoralis= Spangb. Taken with G. flavilineata. JASSIDAE. =Xestocephalus pulicarius= VanDuzee. One specimen of this form taken at an electric light at Charleston, July 28. =Xestocephalus tesselatus= VanDuzee. Collected from elm leaves at Charleston. Quite rare. =Hecalus lineatus= Uhler. Not common. Nymphs more numerous than adults during August. Swept from rank growing grasses near the Mississippi River at Hannibal. =Parabolocratus viridis= Uhler. Recorded from Springfield, Columbia, Chillicothe, and Charleston. Observed feeding on grass, sweet clover and sorghum. =Platymetopius acutus= Say. Only one adult collected. Swept from weeds near a bog at Charleston, July 28. =Platymetopius frontalis= VanDuzee. Very common throughout the state. Attacks clover, alfalfa, and grasses. Also taken from woody shrubs. =Deltocephalus nigrifrons= Forbes. Generally distributed in all sections of the state. Very abundant during October. Known to feed upon clover, alfalfa, wheat, many grasses including blue grass, and several weeds. Attracted to lights at night. =Deltocephalus weedi= VanDuzee. Quite common on weeds along roadsides and shady places. Collected at Lutesville and Charleston during the late summer.