CONTENTS. 
Page 
EMR’ hy BN Sens sly oe he aie Soci eA oa a owe 11 
History of the species.....-..-.-.-- Bene. f= bee ee Hee Ie A ES ee Oe 12 
NINES UT ct ee ers fe eee ee See te Boe ots ae hs 14 
NUMMER 5 ee ee ee hea ee. Se ae. can oe ee 15 
LD EE I Rees SRE ae ae eo ee 15 
eee re rg CRS a oh nn a a ae 16 
NING ORR UCP AOTR! Be ore Fe ee ty so pe ook are one we rape, 
eS A AAR 9 ee EN Se a ieee oon eG ed fate 
OAL SPS te Ne a a 22 
ILLUSTRATIONS. 
PLATES. 
Page. 
Puate II. Fig. 1.—Corn plant injured by the adult of the maize billbug 
(Sphenophorus maudis); afterward attacked by the larva. Fig.2.— 
Corn plant showing on stalk the effects of feeding by adult maize 
billbugs; effects of feeding by larve on roots. Fig. 3.—Corn plant, 
much distorted, showing suckers; final effects of feeding of adult 
AS ee Rai ey ep ak ee PN ee SO 18 
III. Corn plants showing effects of feeding of adult maize billbugs in the 
field; plant at left not attacked; the two at right attacked by larve. 18 
TEXT FIGURES. 
Fic. 5. The maize billbug (Sphenophorus maidis): Figgs..........--.--------- 16 
CIC INO Bune gas 5.8 et 2 3b o-oo isis So on ae nn = Se apne 2 16 
7. Corn plant showing result of attack by the maize billbug...........-. 18 
8. Swamp grass attacked by the maize billbug............-.......----- — 18 
Peer seine NS PRA 2 52t ee re oe oe ee Se ee 19 
io: ine neauze billbue-: Adult: -...-...2-2.---2--2---- 8 ep ees ooh NS 21 
79236°—Bull. 95—11 WI 
