45 
Figs. 16-20. The Black-fly, Sitnulium vejucstum: Fig. 16, female, front of head (x 35. 
Drawn from dried specimens; structure of palpi not to be depended on); Fig. 17, right hind 
leg of male (x 23); Fig. 18, thorax and head of male (x 22); Fig. 19, larva, lateral view—from 
H. Garman; Fig. 20, larva, dorsal view. 
