136 THOMAS SAY FOUNDATION 
PLATE 6 
FIGURES 83-99 
83-88 Alloperla coloradensis Banks 
89-93 Alloperla borealis Banks 
In the above two species note that the inner apex of the fourth 
segment of the maxillary palpus is produced and bears a bunch 
of hairs; the lacinia appears to be unidentate but there is a 
suggestion of a second small tooth. 
94-99 Chloroperla cydippe Newm. 
Very similar to the above two species but lacinia is distinctly uni- 
dentate; and the submentum is not so much produced at the an- 
terio-lateral areas. 
