Jul. 329, U. S. Dept. of Agriculture. 
Plate III. 
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Eggs and Larva of Simulium. 
Fig. 1.— Egg of Simulium venustum, freshly laid. (After Mecznicow.) Fig. 2.— Egg of Simu- 
lium venustum, second to fourth day. (After Mecznicow.) Fig. 3. — Egg of Simulium venus- 
tum, fourth to sixth day, showing "banded appearance." (After Mecznicow.) Fig. 4. — 
Same, dorsal view. (After Kolliker.) Fig. 5. — Egg of Simulium venustum, just before 
hatching, showing larva in a free condition within the shell. (Original.) Fig. 6. — Egg of 
Simulium pictipes. (Original.) Fig. 7.— Larva of Simulium bracteatum, showing histoblasts 
of pupal filaments, A, A. All greatly enlarged. (Original.) 
