Jour. Roy. Soc. Western Australlv, Vol. XTI, No. 19. 171) 
Contributions from the Department of Diolo^>y, University of Western 
Australia — No. 9. 
A Description of Two New Genera and Species of Phreatoicidea, 
with a Discussion of the Affinities of the Members of this 
Family, by George E. Nicholls. 
{Read July 13, 1926. Published August 31, 1926.) 
Contents : 
Page 
I. 
Introductory 
179 
TI. 
Amphisopus, gen. nov 
182 
III. 
Amphisopus, distribution 
SI 
GO 
IV. 
Phreatoicus joyneri, sp. nov 
183 
V. 
Phreaioiciis joyneri, affinities 
189 
VI. 
Pophreatoicus, gen. nov 
190 
VII. 
Bophreaioiens Vershawi, sp. nov 
191 
VIII. 
Notes on the habits of some of tlie Phreatoicidea 
197 
IX. 
Tlie position of Eophreatoicus in the Phreatoicidea . . 
201 
On the occasion {>f a short visit made to Victoria in 1 ebruary 
ot this year, 1 collected, during a week-end at Mt. Buffalo, a number 
of specimens of a species of riircafoicus, with (piitc small eyes. 
These, while bearing a marked general resemblance to P. ausfjudis, 
seemed nevertheless to differ from that form in (piite a numliei of 
features. Since but one other sipecies {P. shephardi, which is eye- 
less), has been described, hitherto, from the eastern part of the 
Australian mainland, it was likely that these specimens would ])rove 
to be referable to a new species and, accordingly, as many as possible 
were secured. 
They occurred in a variety of situations; the first, a solitary 
speeimeil, was caught in tlie waters of Lake Gatani, its presence there 
probably accidental, for prolonged search failed to reveal others 
