I 
; 
572 
144 
both sides, crowded towards the base, and becoming more 
discrete on the dorsum. Another also typical in shape with 
spots at both margins, also sparsely scattered over the 
dorsum; but these are nearly obscured by a very fine general 
brown reticulation, in which are faintly visible four slightly 
browner cross lines, due to greater thickness of the reticul- 
lation at these places. 
Ellensbrook beach 16, ranging from 14°5 mm. x 8 x 6°25 
to 20 mm. x 11 x 85, yellowish-brown. These all have 
transverse rows of square spots on the dorsum forming four 
interrupted or articulated narrow bands, of which the front 
one is often obsolete or absent, less frequently the back one 
is obsolete. Besides these there are many rather large brown 
dots, most numerous and deeply coloured on the thickened 
outer lip, numerous but more discrete on the left side of the 
shell, extending upwards to the centre of the dorsum. These 
are mostly roundish and irregularly scattered, but some tend 
to be squarish, and even to run in transverse lines between 
the bands of squarish spots. Rottnest (Mrs. Simpson) 2, up 
to 16°25 mm. 
C. pulicaria seems to be the extreme western variant 
of (. angustata, which is the extreme eastern form, while 
comptom and piperita and bicolor are most abundant in the 
middle southern Australian area. (C. angustata is more 
common in Tasmania than elsewhere, and becomes gradually 
scarcer to the west, while C. pulicaria is common on the 
western coast of Western Australia, is rare on its southern 
coast, becomes very rare further east, and disappears beyond 
Kangaroo Island. Shaw says C. pulicaria, ‘‘on account of 
its narrower and more elongate form and finer teeth, should 
be regarded as a good species, and not a variety of @. 
angustata.”’ But in well-marked (. pulicaria the teeth vary 
from 22 to 30 in shells of the same size, and in well-marked 
C. angustata-comptoni they may be just as numerous and as 
fine, and the shape may be as narrow and long in the latter 
as in the former. The colour ornament in typically shaped 
C. pulicaria also varies from uniform white through all 
gradations of the flea-bitten dots, and through the articu- 
lated bands and very fine pepperings and fine reticulations 
into gyiperita and bicolor, and so through ¢omptoni into | 
declivis and PETE 


ZI PLO 
* Cypraec friendii, Gray Bs 7 
Cypraea friendii, Gray: Zool. Miscel., 1831, vol. viii., p. 29;. 
Gray: Descrip. Cat. of Shells, Cyp., 18382, p. 5, No. 32; Menke : 
Moll. Nov.-Holl., 1848, p. 29; Shaw: Proc. Mal. Journ. Lond., 
1909, vol. viii., p. 303; Hedley: Journ. Roy. Soc. W. Austr., 
vol, 1., 1916, p. 199. 
