BIOTIC ASSOCIATIONS OF COCKROACHES— ROTH & WILLIS 263 



Fig. 7.— Cockroach-hunting wasps. A, DoUchurus stanfoni leading a nymph 

 of BlatteUa litnricollis to her nest, c. X4. (Reproduced from F. X. Wilhams 

 [1919].) B, Podium haematogastrwn attaching her egg to^ an Epilampra sp. 

 while on the side of a termite mound that contains the wasp's nest, c.^X 1.6. C, 

 Epilampra sp. parasitized by P. haematogastriim showing the wasps egg at- 

 tached to the right fore coxa, c. X 32. (B and C reproduced from Williams 

 [1928], through the courtesy of Dr. F. X. Williams and F. A. Bianchi.) 



