Bui. 329, U. S. Dept. of Agriculture. 
Plate V. 
PUP/E OF SlMULIUM. 
Fig. 1.— Respiratory filaments of pupa of Simulium vittatum. Fig. 2.— Pupa of 
Simulium venustum, in pupal case. Fig. 3.— Pupa of Simulium bracteatum: A, 
side view of filaments. Fig. 4.— Pupa of Simulium jenninc/n. Fig. 5.— Pupa of 
Simulium pictipes, in pupal case. All greatly enlarged. (Original.) 
