Daphnia kalbergensis. 
Of moderate’ size. 
Antennule of male. 
Head of variety. 
Cyclops pulchellus (thomasi). Fourth foot. 
**  pulchelIns (thomasi). Outer ramus of first foot. 
Daphnia hyalina (D. galeata). Typical form. 
Cyclops thomasi. Fifth foot. 
*  thomasi. Stylet. 
Cyclops (insectus?). Fourth foot. 
Bythotrephes longimanus. Female. 
A curious large protozoan; a. infundibulum frame work; 0). 
pulsating vacuole; ¢. nucleus; d. food and digested matter; e. 
protective rods; lla. spicules of the infundibulum. 
