Ergasilus depressus. Male. Peo. 
eae 
Cyclops leuckarti, deep-water variety, = C. tenuissimus.— 
¥ f 
see 
‘Stylets. 
Fifth foot. 
Antennule. 
Fourth feet. 
Antenna of male. 
Cyclops brevispinosus. 
Stylet. 
Inner maxilliped. 
Swimming foot. 
Fifth foot. 
Antennule. 
Opening of receptaculum. 
Cyclops sp.? Nauplius. 
