434 FUNAFUTI ATOLL. 
weaker one half a whorl back, none else appear. Aperture per- 
pendicular, oval. Outer lip smooth within, sharp edged, crenulate 
outside, inner lip excavate, thickly lined with callus, with a 
posterior nodule at the margin of the channelled angle. Length 
7, breadth 3 mm. 
A single specimen from the lagoon beach, 
This species seems related to C. maculosum, Mighels ; it is far 
more slender, and differs in that the revolving line of tubercles 
fails to attain the last whorl. 
CERITHIUM VARIEGATUM, Quoy & Gaimard, 
Tryon, loc. cit., p. 134, pl. xxiv., figs. 41, 43, 45, 65, 66. 
Some imperfect examples collected by Mr. Sweet are with 
hesitation so determined. 
, CERITHIUM ZEBRUM, Kiener. 
Tryon, loc. cit., p. 187, pl. xxv., figs. 71, 72. 
I refer to this species a small shell abundant on the lagoon beach, 
7 mm. long, variously coloured—brown, cream, mauve and salmon, 
unbanded and banded. No really satisfactory figure or description 
of it exists, the earliest is much the best. Melvill and Standen, who 
recognise it from the Loyalties, erroneously state that it was origin- 
ally described from the Galapagos, whence Sowerby reported it. 
The locality given by Kiener himself* is Mauritius, Tryon adds 
Samoa, I found it in Port Moresby, British New Guinea and at 
Oubatche, New Caledonia. It is represented in this Museum 
from the New Hebrides. So widespread and variabie a species 
probably possesses a synonomy to match. I agree with Langkavel’s+ 
remark that C. zanthinwm of Gould, should be here included, 
which would extend the geographical range of the species to 
Tahiti and the Paumotus. It is likely that C. wnilineatum, Pease 
and C. dichroum, Melvill and Standen should be reduced to C. 
zebrum. Pease adds C. asperswm, Deshayes as a synonym. } 
CERITHIUM IMPENDENS, Sp. nov. 
(Fig. 23). 
Shell strong, stout, regularly conical, each of the upper whorls 
overhanging the next, biangled above the suture, heavily 
variced on the back of the last whorl. Colour—upon a 
white ground is painted ochre-yellow, in one instance chocolate, 
which chiefly prevails on the base and between the ribs, thus 
accentuating the projections to the eye. Whorls eight, suture 
deeply impressed. Sculpture—peculiar buttress ribs ornament the 
* Kiener—Coquilles Vivantes, Canaliferes i., (n.d.), p, 72. 
+ Langkavel—Donum Bismarckianum, 1871, p. 25. 
ft Pease—Am. Journ. Conch. vii., 1872, p. 75. 
