296 PROF. W. J. DAKIN ON THE 
and, what is perhaps more interesting, to show that some of the 
species already known from the other States of the Common- 
wealth occur also in Western Australia. The Western State is, 
therefore, not so distinct from the other regions as the earlier 
investigations might lead one to believe. There are now twelve 
species or varieties which are known only from the West, and 
there is no doubt that further investigation will reveal several 
more new species and very probably a much wider distribution 
for the species already known. The new records are from 
specimens collected by Professor Woolnough, Mr. Alexander, 
and the author. Two of the species discovered by the Hamburg 
Expedition have been met with again. 
EUPHYLLOPODA. 
ANOSTRACA. 
Family BRANCHIOPODID. 
Genus ARTEMISIA. 
ARTEMISIA WESTRALIENSIS (Sayce) *. 
ih 
This species is the only Artemia known to occur in Western 
Australia. Jt was collected in Lake Aurean in the Murchison 
District in 1896, but no male specimens have as yet been 
obtained. 
xenus BRANCHINELLA Sayce, 1903. 
This genus was instituted by Sayce to receive two Branchipods 
which, though agreeing with Branchipus in very many ways, 
differed in the male claspers being without any accessory branch 
or spine, the second antenne of the female being long and ribbon- 
like, and the penis of the male possessing certain peculiar 
characters. 
Since the genus was founded, the Hamburg Expedition 
discovered one of the two species in Western Australia. This 
was previously known only from Central Australia. The 
expedition’s collection also included a new species. Up to date 
no species of Branchipus has been met with in Australia. We 
have rediscovered the species of the German expedition, extended 
the distribution of an Hastern form, which, however, occurs here 
in the form of a variety, and added still another species to the 
list. 
BRANCHINELLA AUSTRALIENSIS (Richters). 
Variety occidentalis, nov. (PI. I. figs. 1-5.) 
The species Branchinella australiensis, a large and stout Bran- 
chipod, was first described by Richters fT from specimens from 
* [The parentheses around the names of authors placed after scientific names in 
this paper are used in accordance with Article 23 of the International Rules of 
Nomenclature (Proc. 7th Int. Cong. Boston 1907, p. 44. (1912)).—Epitor. | 
+ Richters, Journ. de Muséum Godeffiroy, xii., 1876. 
