_ 
>. 
> 
B b, beak. 
\ 14? 
P Larva of same, enlarged five diameters. 
Vig. 6. Side view cf same. 
PLATE VI. 
Fig. 1. Agriotes pubescens, imago; enlarged six diameters. 
Fig. 2. Melanotus fissilis, imago; enlarged three and four fifths diam- 
Fig. 3. Melanotus communis, imago; enlarged four diameters. 
Fig. 4. Side view of a middle segment of larva of same species, show- 
ing muscular impression, spiracle, ete. 
Fig. 5. Caudal segment of same, dorsal view; greatly enlarged. 
Fig. 6. The Corn Wireworm, Melanotus cribulosus, larva; enlarged 
four diameters. 
Fig. 7. Side view of a middle segment of same. 
Fig. 8. Caudal segment, dorsal view; greatly enlarged. 
PLATE VII. 
Fig. 1. The Corn Wireworm, Melanotus cribulosus, imago; enlarged 
four and a half diameters. 
Fig. 2. Asaphes decoloratus, imago; enlarged four and one fifth diam- 
eters. 
Fig. 8. Larva of same, dorsal view; enlarged three and three fourths 
- diameters. 
Fig. 4. Caudal segment of same; more enlarged. 
Fig. 5. The Corn Root Aphis, Aphis maidiradicis, oviparous female; en- 
larged fourteen diameters; a, Hind tibia, showing sensoria. 
Fig. 6. Male of same species; enlarged twenty-five diameters; @, an- 
tenna. 
PLATE VIII. 
Fig. 1. The Corn Root Aphis, Aphis maidiradicis, wingless viviparous 
female; enlarged fourteen diameters; a, apex of abdomen showing cornicles, 
tubercles, and cauda. 
Fig. 2. Antenna of same. 
Fig. 3. Pupa of same species; enlarged twenty-one diameters. 
Fig. 4. Winged viviparous female of same species;~ enlarged sixteen 
‘diameters. 
Fig. 5. Antenna of same. 
Fig. 6. The Grass Root Louse, Schizoneura panicola, winged _ viviparous 
female; enlarged eighteen diameters; a, antenna. 
PLATE IX. 
Fig.-1. The Grass Root Louse, Schizonewra panicola, Wingless viviparous 
female; enlarged twenty-nine diameters. 
Fig. 2. Vrama erigeronensis; enlarged twenty Sete) a, antenna; 
b, beak; c, cauda. 
9 
Fig. 3. Forda occidentalis; enlarged twenty-one Tamereks: a, antenna, 
‘b, beak; ec, cauda. 
Fig. 4. Tychea brevicornis; enlarged twenty-two diameters; a, antenna, 
Fig. 5. Geoica squamosa, wingless viviparous female; enlarged twenty- 
three diameters. 
Fig. 6. Structures of same; a, beak; 6, antenna; c, tarsus. 
PLATE X. 
Fig. 1. Geoica squamosa, pupa; enlarged twenty-four diameters. 
Fig. 2. Winged viviparous female of same species, antenna. 
