440 FUNAFUTI ATOLL, 
Shell rather narrow, tapering to a fine and slender point. 
Whorls fifteen. Colour ochraceous with white gemmules. Proto- 
conch six whorled, first two together semiglobose and shagreened ; 
remainder keeled by a single, strong, central, projecting carina, 
which is beaded by the passage of numerous close set delicate 
bars crossing the whorls obliquely. All adult whorls except the 
last have two rows of gemmules, about sixteen in a row, alternat- 
ing vertically. On the last whorl there are two additional anterior 
rows of smaller gemmules, an incipient row on the periphery and 
two minor scarcely beaded ridges on the base. The gemmules are 
large and very prominent, polished and reflecting a nacreous 
lustre, rounded anteriorly, flattened with corner angles peripher- 
ally and shelved atop; each is linked to its neighbours in the 
row by a coloured ridge; in the centre of the whorl a sharp 
groove runs between the two rows. The surface in general is 
decussated by faint growth lines crossing spiral engraved lines. 
Aperture nearly perpendicular, ovate, inner lip with a thick 
callus layer, outer lip thickened and reflected, the right margin 
crossing the canal in a spur; anal notch cordate, the orifice 
taking the place of the last sutural gemmule, canal oblique, 
moderately produced. Length 5, breadth 14+ mm. 
Shallow water in the lagoon. The commonest Z'riforis at 
Funafuti. 
Prominent characters which distinguish this species are the 
large, white, facetted, gemmules contrasted against the dark 
background, the one-keeled apex, and the peculiar anal notch. 
TRIFORIS TORQUATUS, Sp. nov. 
(Fig. 28). 
Shell moderately broad. Whorls fifteen, suture sharply im- 
pressed. Colour orange buff; on the ninth and tenth whorls 
the lower rows of gemmules are chocolate, and on the last row two 
narrow bands of chocolate cover two anterior rows of gemmules, 
stain the lip and wind down the throat ; on the eleventh, twelfth, 
thirteenth and fourteenth whorls, the lower lines of gemmules are 
white ; the seventh and eighth whorls are entirely white. Proto- 
conch six whorled, first two together semiglobose, remainder 
keeled by a single, strong, central, projecting carina, which is 
beaded by coarse, slightly oblique bars. All adult whorls, except 
the last, have two rows of gemmules, about seventeen to a row, 
alternating vertically. On the last whorl there is in addition a 
peripheral and two basal ridges, all scarcely beaded. On the 
penultimate whorl a thread appears in the space between the 
gemmules, and follows the sinuations of the upper tier as far as 
the aperture without gaining equal rank. The gemmules are 
polished hemispherical bosses, shelved above, distant about half 
