128 
ZOOLOGY. 
size and very long tongue. The butterflies differ from the 
moths in having knobbed an- 
tennae, while their chrysalides 
are often ornamented with 
golden or silvery spots. 
Order 16. Hymenoptera, — 
The bees stand at the head of 
the insect series in perfection 
of parts, especially those of the 
mouth. 
The Hywenoptera are repre- 
of Anomis xyliua, the Cotton gented bv t he saw-flics, the fi^all- 
Army-worm. . *^ . . ® 
flies, the ichneumon-flies and 
the ants, the sand-wasps, mud-wasps, paper-making wasps, 
and bees. 
The lowest family is the Uroceridce, or horn-tails (Fig. 
Fig. 165.— Egg, caterpillar, and moth 
Fig. 168— Gall-fly of oak. 
Fig, 166.— Horn- 
tail: larva of 
Tremex co- 
lumba. Nat. 
size. 
Fig. 167.— Pear Slug, 
natural size, gnaw- 
ing leaves, a, lar- 
va enlarged; b, the 
fly. 
Fig. 169.— An Ichneumon-fly, 
