123 



Fig. 4. Parasite of Corn Aphis, Adialytus maidaphidis : a," first, 

 second, and third articles of antenna of female ; 6,*distal 

 article of antenna of female ; c, mandible of female ; d, 

 maxilla and palpus ; e, four distal articles of antenna of 

 male ; ./', hind leg of female ; g, valve of ovipositor ; h, 

 fore wing of female ; i, hind wing of female ; j, abdomen 

 of female ; k, abdomen of male, side view ; I, ovipositor, 

 separated from valves ; sh, sheath ; la, lancelet ; m, larva 

 of Adialytus, taken from body of Corn Aphis in Decem- 

 ber. (Original.) 



Fig. 5. Nematus robin'ue; magnified three diameters. (Original.) 



