168 THOMAS SAY FOUNDATION 
PLATE (22 
FIGURES 200-201 
200 Atoperla ephyre Newman 
Two ocelli, spaced considerably apart; oval pronotum; long tufted 
gills; long fringes on legs. 
201 Perlinella drymo Newman 
Long gills under thorax; small anal gills; eyes set far forward on 
head. 
