514 T'ransactions. 
the need for a new division. The shell is very peculiar, having the very 
large protoconch of Uzia (but far more asymmetrical, and with an immersed _ 
nucleus), the shell formation of Aphera, the strong basal fasciole and notch : 
of Cancellaria, a slight umbilicus, and a straight columella. The general 
appearance is that of Bivetia, but the anterior notch is more lateral, the 
columella plaits different, and the pillar much less bent backwards and 
twisted; the apex disagrees radically. Cossmann, in mentioning this 
shell, has already indicated the probable need for a new group. erica 
wannonensis (Tate) has a somewhat similar aperture, but a different form 
of growth and embryo. 
OamaRura n. gen. Type, Admete suteri M. & M. 
This shell and its Australian allies do not correlate well with a 
Cancellarid group: the reticulate sculpture of strong, sharp, § iral 
ridge forming the base of the columella ; and the small, one-whorled 
protoconch, form a characteristic and easily recognized combination. 
NassicOLA n. section. Type, Neptunea costata Hutt. 
Further species of both Aethocola s. str. and of Nassicola are awai 
description. 
RucoBELA n. gen. Туре, Ptychatractus tenuiliratus Sut. 
This shell and its Neozelanic and Australian allies have been 
discussed in the paper, and the necessity there shown for a new genus. 
PaRASYRINX n. gen. Type, Pleurotoma alta Harris. 
Related to, and classed by Suter under, Leucosyrinz, which has à differ 
i and m 
aaa 1 ; M. and Surcula protransenna М. & 
Tr several genera to which these shells bear resemblance: 26100" 
enosyrinz, and Steirazis all contain forms more ‘or less superficially $ 
