pJouR. Roy. Soc. Western Australia, Vol. XII, No. 11. 101 
A New Cirripede prom the Upper Cretaceous of Western 
Australia. 
Since the ])ublication of my paper (1924, Joiirn. Roy. Soc. W.A., 
X, Pt. ii, p. ()4) on the Cirripede Calaiitica {Scillaclepas) gingin- 
nsis (Etheridge, jiin.), i\Ir. L. Glauert, E.G.S., lias sent to me from 
ime to time further Cirripede remains which he lias collected in the 
Jpper Cretaceous (Santoiiian) beds in the neighbourhood of (ringiii, 
V'estern Australia. These remains come from One Tree Rill and 
dole Cap Hill, at Gingin, and others come from the same horizon at 
?.ouiid Hill, Handarragan, some fifty miles north of Gingin. Nearly 
11 belong to the above-mentioned species. 
A very intei’esting new species, the second species of Cirripede 
0 be described from the Cretaceous of Australia, is represented by 
wo terga from Dandarragan, and a scutum from One Tree Hill 
irobably belongs to the same species. The terga are V-shaped 
iwing to the deep emargination of the scutal side of the valve, and 
hey evidently belong to some Scalpelliform barnacle in Avhich 
lecalcification of the valves has set in. Among recent forms there 
s a tendency towards decalcihcation of the valves, and this occurs 
n more than one stock, but it is as interesting as it is unexpected, 
0 find it had already appeared in the Upper Cretaceous. 
ScALPELLUM Loacli, 1817. 
Sub-genus Neoscalpellum Filsbry, 1907. 
Valves only partly calcified, the calcareous part of the tergum 
V^-shaped; infra-median latus narrow, higher than wide; scutum 
rvith apical umbo. 
Subgenotype Scalpellum dicheloplax Pilsbry. 
Most of the recent species of Scalpelliform barnacles showing im- 
peifect calcification of the valves are grouped in the sub-genus 
Neoscalyellum of the genus ScalpcUum. It seems very proljable, 
however, that imperfect calcification of the valves appeared in 
different stocks at different times, and the occurrence of this form in 
the Upper Cretaceous shows that the tendency occurred early in the 
group. The grouping of these forms does not seem to be a natural 
one, but to draw attention to this Cretaceous form, it is included 
ill Neoscalpellum. 
