Oaar. XVII. POLYPOMPHOLYX. 445 
PoLYPOMPHOLYX. 
This genus, which is confined to Western Australia, 
is characterised by having a “ quadripartite calyx.” In 
other respects, as Prof. Oliver remarks,* “it is quite a 
Utricularia.” 
Polypompholyx multifida.—The bladders are attached 
in whorls round the summits of stiff stalks. The two 
antenne are represented by a minute membranous 
fork, the basal part of which forms a sort of hood over 
the orifice. This hood expands into two wings on each 
side of the bladder. A third wing or crest appears to 
be formed by the extension of the dorsal surface of the 
petiole; but the structure of these three wings could not 
be clearly made out, owing to the state of the speci- 
mens. The inner surface of the hood is lined with 
long simple hairs, containing aggregated matter, like 
that within the quadrifid processes of the previously 
described species when in contact with decayed ani- 
mals. These hairs appear therefore to serve as absor- 
bents. A valve was seen, but its structure could not 
be determined. On the collar round the valve there 
are in the place of glands numerous one-celled papille, 
having very short footstalks. ‘The quadrifid processes 
have divergent arms of equal length. Remains of 
entomostracan crustaceans were found within the 
bladders. i 
Polypompholyx tenella—The bladders are smaller 
than those of the last species, but have the same 
general structure. They were full of débris, apparently 
organic, but no remains of articulate animals could 
be distinguished. 
* ¢Proc. Linn. Soo.’ vol. iv. p. 171. 
