3 
Branchiopodernes Orden lader sig naturligt ind- 
dele i 4 underordnede Grupper, eller Underordener, 
der saavel hvad den ydre Habitus som den anato- 
miske Bygning angaar, skiller sig temmelig skarpt fra 
hinanden. Disse Underordener er folgende: 1) Phyllo- 
carida, 2) Phyllopoda, 3) Cladocera og 4) Branchiura. 
De 2 forste af disse Underordener vil blive gjorte 
til Gjenstand for en noiere Behandling i neerveerende 
Bind af Fauna Norvegie. 
The order of Branchiopods may be naturally 
divided into 4 subordinate groups or sub-orders, — 
which, both in regard to external habitus and ana- 
tomical structure, distinguish themselves pretty 
sharply from each other. These sub-orders are, as 
follows viz: 1) Phyllocarida, — 2) Phyllopoda, — 
3) Cladocera, and — 4) Branchiura. The two first- 
named sub-orders will be made the subject of a 
closer treatment in the present volume of Fauna 
Norvegie. 
