PHYLLOPODA OF W. AUSTRALIA. 301 
EULIMNADIA BADIA Wolf. 
This species was the only Hulimnadia known from Western 
Australia before this report. It was discovered by the Hamburg 
Expedition in pools together with Branchinella longirostris. As 
mentioned in discussing that species, Hulimnadia badia has 
again turned up with its fellow companion. I can confirm the 
description of Wolf, but must make a slight alteration, or rather 
an addition, to his diagnosis of the species. ‘The specimens were 
collected. by Professor Woolnough. They are the largest and 
most robust of our Hulimnadia. Fortunately I have been able to 
compare these specimens with the type in the Hamburg Collection. 
Wolf remarks that never more than five lines of growth can be 
observed on the shells. I have recognised six and even seven on 
some specimens. Another slight point of difference is that the 
shell-gland is stated to occur always inside the first line of growth. 
This is frequently the case but not always, and often extends over 
the first line. In Wolf’s drawing it is indicated well inside the 
lines of growth. One other point is that the head in the region 
of the eye does not protrude in such an angular manner as figured 
and described by Wolf. There is absolutely no doubt about the 
identity of the two sets of specimens. The characteristic features 
are all obvious, and it is well to emphasise these slight variations 
perhaps due to age or the season, especially since they have been 
touched upon and figured as of some hittle diagnostic value. 
Both males and females occurred in rock-pools near Burracoppin, 
not very far from Boorabbin, where originally discovered. 
Genus Cyzicus. 
Cyzicus (EsTHERIA) RUFA, sp.n. (PI. IL. figs. 19-21.) 
Five species have been recorded from Australia, and out of 
this number two were from Western Australia. These were 
determined by G. O. Sars and Sayce respectively. No specimens 
were met with by the German Expedition. ‘The species of Sarsis 
Cyzicus elliptica, and that of Sayce Cyzicus sarsit. 
The new species, Cyzicus rufa, was collected in pools at 
Lakeside, Boulder City, by Mr. Alexander. Two individuals 
were at my disposal, but unfortunately both were females. 
Characters. Shell, seen laterally, of a rather quadrangular form 
(fig. 19), both ends being rather too obtusely rounded to give the 
impression of an ellipse. Anterior-posterior length rather great 
for the dorso-ventral depth, and much longer than that of any of 
the other Australian species. Umbone prominent and situated 
much nearer the anterior end (about one-fourth the total antero- 
posterior diameter from the anterior end of the shell). The 
ventral margi of the shell is almost straight for some distance. 
Both ends are evenly rounded, and the axis of greatest length lies 
midway between the dorsal and ventral margins of the shell. 
Lines of growth about fourteen, with sete. The sculpture of the 
