484 FUNAFUTI ATOLL. 
ATYS DACTYLUS, sp. nov. 
(Fig. 45). 
Shell date shaped, truncated above and below, 
minutely perforate above, deeply and narrowly 
umbilicate below. Colour white, glossy. Sculp- 
ture—from sixty to seventy, irregularly waved, 
narrow, shallow grooves girdle the shell, between 
which are smooth, flat topped lyre, two or three 
times their breadth; these are crossed at 
irregular intervals by fine and coarse growth 
lines. The aperture is vertical, longer than the 
shell, narrowly arched, dilated above and below, 
rather effuse anteriorly. Above, the lip rises 
from the centre of the apical crater and folding 
back almost covers the perforation ; the outer 
Fig. 45. lip is straight and simple; the columella broadly 
reflexed,emarginate without, tuberculate within, 
a short tongue of callus extends a little distance upwards along 
the body whorl. Length 43, breadth 24 mm. 
One specimen from the lagoon beach. 
This species appears to approach nearest to A. jeffreyst, Wein- 
kauff, from the Mediterranean, which served Monterosato as type 
for his genus Rowaniella. 
CYLICHNA ERECTA, Sp. nov. 
(Fig. 46). 
Shell cylindrical, truncated above, bevelled out- 
wardly round the vertex, rounded below and 
compressed around the basal axis. Colour white. 
Sculpture—the only specimen is too worn for exact 
description ; it seems to have been girt by numerous 
broad and shallow spiral grooves. Aperture nearly 
perpendicular ; lip produced medially ; columella 
broadly reflected, apparently minutely plicated. 
Spire umbilicate, a shallow crater into which each 
whorl descends by steps. Length 4, breadth 12 mm. 
A single rather worn example from the lagoon 
beach. 
This species appears to be quite distinct from 
Fig. 46. others of the genus. Those that share the cylindrical 
shape being C. discus, Watson, more truncated 
anteriorly ; C. protracta, Gould, three times larger; C. involuta, 
Adams, C. cylindracea, Pennant, and C. alba, Brown, which 
appear to have the spire covered. No comparison can be 
instituted with a mass of unfigured species with which authors 
(Adams being chief sinner) have oppressed descriptive conchology. 
