ILLUSTRATIONS." 



PLATES. 



Page. 

 Plate I. Fig. 1. — Early Johnson grass heading and blooming on wet banks of 

 sewage canal, San Antonio, Tex. Fig. 2. — Rubbish left by re- 

 moval of sorghum shocks in a field near San Antonio, Tex .... 56 

 II. Fig. 1. — Harvested field of sorghum near San Antonio, Tex., show- 

 ing scattered seed heads. Fig. 2. — Harvested field of sorghum 

 near San Antonio, Tex., in which the sorghum midge ( Contarinia 

 sorghicola) is hibernating. Fig. 3. — Fence line bordering a sor- 

 ghum field near San Antonio, Tex., allowed to grow up in John- 

 son grass 58 



III. Fig. 1. — Mesa near Koehler, N. Mex., with characteristic vegeta- 



tion. Fig. 2. — Pasture nearly destroyed by New Mexico range 

 caterpillar. Fig. 3. — Egg masses of New Mexico range caterpillar 

 (Hemileuca olivix) on a single plant of range grass 60 



IV. Fig. 1. — Male moths of New Mexico range caterpillar resting dur- 



ing the day on stem of wild sunflower. Fig. 2. — Hatching of the 



eggs of the New Mexico range caterpillar 70 



V. Fig. 1. — Damage to a field of corn in Indiana, in 1906, by the corn 

 root-aphis {Aphis maidi-radicis) . Fig. 2. — Same field a year later, 

 showing the effect of applying barnyard manure 104 



TEXT FIGURES. 



Fig. 1. The lesser clover-leaf weevil (Phytonomus nigrirostris): Adult 5 



2. The lesser clover-leaf weevil: Larva and details 6 



3. Clover head showing cocoon of the lesser clover-leaf weevil and leaf 



showing holes eaten by its larva; clover head attacked by the lesser 

 clover-leaf weevil (Phytonomus nigrirostris) and leaf eaten by the 

 clover-leaf weevil (P. punctatus) 6 



4. The lesser clover-leaf weevil: Cocoon 7 



5. The lesser clover-leaf weevil: Pupa 7 



6. The lesser clover-leaf weevil: Egg in situ 8 



7. Clover plant showing place of oviposition of the lesser clover-leaf 



weevil; leaf showing holes made by larvae of the lesser clover-leaf 

 weevil (Phytonomus nigrirostris) and edges eaten out by the clover- 

 leaf weevil (P. punctatus) 9 



8. The lesser clover-leaf weevil: Eggs, greatly enlarged 10 



9. The slender seed-corn ground-beetle (Clivina impressifrons): Adult, 

 larva, pupa, details 15 



a Part II, as originally issued, had the text figures numbered erroneously as from 

 8 to 13. The correct numbers, given in this list of illustrations, are 9 to 14. 



Part VIII, as originally issued, was erroneously paged as from 129 to 142. The 

 correct paging, given in this list of illustrations, is 133 to 146. 



IX 



