se 
LIST OF DESCRIPTIONS. 
Solenopsis debilis, Mayr: worker, p. 9; female, p. 9; male, p. 9. 
_ Mynnica scabrinodis lobicoonis, Nyl.: worker, p. 10; female, p. 10; male, p. 10. 
_ Agonoderus pallipes, Fab., imago, p. 12. 
. Aphodius granarius, Linn., imago, p. 13. 
- Clivina impressifrons, Lec., imago, p. 13. ; 
Phorbia fusciceps, Gett. (The Seed-corn Maggot): larva, p. 15; puparium, p. 16; imago, p. 16. 
Sciara sp.: egg, p. 17; larva. p. 17; pupa, p. 18; imago (female), p. 18. 
Systena teniata, Say (The Pale-striped Flea-beetle): larva, p. 19; pupa, p. 20; imago, p. 20, 
9. Ips fasciatus, Oliv. (The Banded Ips,): larva. p. 22; pupa, p. 23; imago, p. 24. 
0. Elaterids, generic synopsis of larvie, p. 27. 
il. Melanotus, larval characters, p. 28. 
12. Cardiophorus sp., Jarva, p. 28. 
F 13. Drasterius elegans, Fab.: larva, p. 30; imago, p. 31. 
(14. Agviotes mancus. Say (The Wheat Wireworm): larva, p. 33; pupa, p. 33; imago, p. 34. 
ee Melanotzs communts, Gyll.: larva, p. 35; imago, p 35. . 
is 1 Melanotus ee NE Tan image, p » ats), 
1 . Melanotus cribulosus, Lee. (The Corn Wireworm), larva, p. 38; imago, BP. 39, 
19, | Asaphes decoloratus, Say: larva, p. 40; imago, p. 41. 
20. Corn Root Lice, table of species. p. 50. 
21. Aphis maidiradicis, Forbes (The Corn Root Aphis): w ingless viviparous female, p. 70; pupa 
“i at of ea viviparous female, p. 71; winged viviparous female, p. 71;, oviparous female, 
a p. 71; 3g, p. 71; male, p. 71. 
2, , Lasius ies Linn., and its variety @/ienus, Forst., worker, p. 74. 
23, Schizoneura panicola, Thos. (The Grass Root Louse): wingless viviparous female, p. 79; 
pupa, p. 80; winged viviparous female, p. 81. 
% Trama erigeronensis, Thos., wingless viviparous female, p. 83. 
; Forda occidentalts, n. sp., wingless viviparous female, p. 84. 
{ * Tychea brevicornis, 0, Sp., Wingless viviparous female, p. 86. 
 Geoica Squamosa, nN. gen et sp.: genus, p. 89; wingless viviparous female, p. 90; pupa, p. 91; 
winged viviparous female, p. 91; wingless oviparous female (?), p. 92; male (? ), p. 92. 
a 28. Rhisobius spicatus, n. sp., (The Woolly Grass Root Louse), wingless viviparous female, 
)" em) p. 93. 
629. Dactylopius sorghiellus, Forbes (The Corn Mealy Bug): adult female, p. 95; egg, p. 95. 
30. Genus Cyclocephala, larva, p. 121. 
* Cyclocephala immaculata, Oliv., larva, p. 121. 
32. Genus Lachkzosterna, larva, p. 121. 
_ Lachnosterna Raedion agen" and See ie Méia : ineeae p. 122 
_ Lachnosterna giddosa, Burm., larva, p. 122. 
_ Lachnosterna, key to Illinois species, p. 123. 
38, Bacillus rufans, QO. sp., p. 133. ; 
39. Diabrotica 12-punctata, Oliv. (The Southern Corn Root Worm): egg, p. 134; larva, p. 134; 
pupa, p. 135; imago, p. 135. 
4 % Diabrotica longicornis, Say (The Northern Corn Root Worm): larva, p. 143; pupa, p. 144; 
--—s imago, p. 144; egg, p. 145. 
