
NICHOLLS—COPEPODA FROM SOUTH AUSTRALIA 11 
Kry To Tan MAues, 
1. Endopod of right fifth leg a rounded or rectangular plate {a as o 2 
This endopod short, tapering to a sharp point i crassivemis Brady 1872. 
This endopod elongate, slender, distally curved inwards Pe simplex Sewell 1932. 
2. This endopod rounded, unarmed, articulating with the basipod — wmbraticus Giesbrecht 1893. 
This endopod sub-rectangular, truncate, bearing 4 short triangular spine on its posterior sur- 
face, and completely fused with the basipod .. obtusatus Brady and Robertson 1873. 
The details for the species obiusatus and crassiremis used in these keys were ob- 
tained from Sars 1902 and 1921 respectively. 

Wig. 4, Pseudocyclops australis sp. nov., female. Urosome X 160; appendages x 265. 
