272 
Trans. Acad. Sci. of St. Lowis 
EXPLANATION OF PLATE 
Puate XIX 
The Cells of Anthophora raui. 
The pup of Anthophora raui, 
A portion of the tunnel, and the orifice of the nest of Halictus 
zephyrus. 
Nymphs of Chortophaga_ viridfasciata. 
Ant-lion pits in the dust at the foot of the bank. 
