0?i Australian Entomostracans. 71 



dorsal margin produced to a long straight point. Beak 

 sharp. Antennse composed of a few short setae. It is sub- 

 ject to very great varieties. 



Locality ; — common in horse-ponds. 



2. D. Elizahethce. Dorsal margin not produced ; supe- 

 rior antennae, with a long seta springing from near the base ; 

 otherwise very like D. Sima : very common. 



3. D. honorata, like D. reticulata. The first joint of the 

 inferior branch of the rami as long as the first three joints 

 of the superior. 



Locality; — Sydney ; Parramatta, &c. 



4. D. mucronata, Miiller. Anterior margin produced 

 into two sharp points. 



Locality ; — Parramata, South Creek, &c. 



Genus II. Macrothrix. 

 1. M. spinosa. The first joint of the long setae on the 

 rami is produced into a spine. 



Locality ; — South Creek, Liverpool Road. 



Genus III. Moina. 



1. M. Lemnce. The first pair of legs in the female are 

 adapted for clasping. 



Locality ; — pond near the Dam at Cook's Eiver. 



2. M. Macleayii. A seta on the basilar joint of the 

 rami as long as the branchi. 



Locality ; — Pond on the hill above Elizabeth Bay, 



Sydney. 



Fam. II. 



Lynceid^e. 



Genus I. Eurycercus. 



L E. spinosa. The setae of the rami having the spine 



as in Macrothrix spinosa. 



Locality ; — Pond on Liverpool Road. 



