482 MARGUERITE HENRY. 
spinules along half their length; one denticle is present at 
the base of each. ; 
_ Specific Characters.—Carapace seen laterally rounded, 
dorsal and ventral margins curved, posterior edges short. 
Rostrum long and narrow. «Kye large. Antennules short 
and thick. Carapace pitted. Tail-piece with a prominent: 
supra-anal angle; twelve spines on the infra-anal margin. 
Hnd-claws long with one secondary denticle at the base of 
each, and a row of spinules along half their length. 
This form was found at Kendall, Lett River and Sydney 
University pond. Type specimen in the Australian Museum, 
No. P 4335. 
CHYDORUS GLOBOSUS Baird. 
This form was first described by Baird in the ‘*‘ Natural 
History of the British Entomostraca.”’ Lilljeborg gives a 
full description with good figures in ‘“‘“Oladocera Suecize.’’(” 
Several specimens of this form were found at Sydney 
University in June. It has been recorded from Hurope and 
from Centennial Park and Botany near Sydney. 
CHYDORUS OVALIS Kurz. 
This form was first described by Kurz in ‘‘ Dodekas neuer 
Cladoceren.”’ Lilljeborg gives a detailed description in 
“*Cladocera Suecize.’’() 
This species was present in a tube of material collected 
at Centennial Park in June. It has been recorded from 
several Huropean countries. 
Literature. 
1. Batrrp—Natural History of the British Entomostraca. Roy. 
Soc., London, 1850. 
2. Brreze—Notes on Cladocera. Trans. Wisconsin Academy, 
Vol. xvi. Part 11, No. 3. 
3. CatmMaAN—A Treatise of Zoology, edited by Sir Ray Lankester, 
Part vil, Third Fascicle, Crustacea. 
