PLATE IV 
Fig. i.— Closteroccrus tricinctus, a parasite of Agromyza parvicornis; A, Dorsal view 
of adult; B t side view of antenna. Much enlarged. (Original.) 
Fig. 2.— Opius diastatae , a parasite of Agromyza parvicornis: Adult. Mitch enlarged. 
(Original.) 
Fig. 3.— Opius succineus, a parasite of A gromyza parvicornis: Adult. Much enlarged. 
Original.) 
