oo to he 
oi. 
Daphnia minnehaha. 
Ephippial female. 
Post-abdomen. 
Antennule of male. 
Daphnia exilis. 
Female. 
Post-abdomen. 
Simocephalus vetulus. 
Caudo-ventral angle of shell. The markings are on the outer 
lamina. 
Margin of shell cephalad. 
Post-abdomen. 
Head. 
"eek 
to eee 
