ANNULOSA. 



53 



ORDER III. CLADOCERA. 



i Fam. a. Daphniidse. Daphnia, Bosmina (fig. 47). 

 / Fam. &. Lynceidse. Lynceus. 



Fam. c. Polyphemidse. Polyphemus. 

 Fam. d. Sididae. Sida, Daphnella. 



(Leydig, Naturgeschichte der Daphniden, 1860 ; Norman and Brady, A 

 Monograph of the British Entomostraca belonging to the families Bosminidce, 

 Macrothricidce, and Lynceidce, Nat. Hist. Trans. Northumberland and 

 Durham, 1867.) 



ORDER IV. PHYLLOPODA. 



Fam. a. Apodidse. Apus (fig. 48), Lepidurus. 



Fam. b. Branchipodidae. Brancliipus, Artemia. 



Fam. c. Estheriidse. Estheria, Limnadia. 



Fam. d, Nebaliidse. Nebalia (fig. 48). 



Fam. e. *Peltocaridoe. Peltocaris, Aptychopsis. 



Fig. 48.- Tliyllopoda. A, Nebalia Herbstii, enlarged about three times. 

 B, Apus cancriformis, viewed from above. 



