PLATE VIII. 



FiG3.1-2, Nests of Ammophila urnarla, % natural size. 



Figs. 3-4. 'i^Qaisot Ammophila urnaria, natural size. 



Fig. 5. Caterpillar with egg of ^jnAnop/i«7a wrnaWa. 



Fig. 6. Nest of Cerceris nigi'escens, tunnel 3J^ inches long. 



Fig. 7. Nest of Oxgbelus quadrinotatus, natural size. 



Pig. 8. Side view of spider: A, nervous system. (After Emerton.) 



