486 FUNAFUTI ATOLL. 
So conspicuous a shell is readily observed; Pilsbry quotes 
Pacific records embracing most archipelagoes between Queensland 
and Hawaii. 
HyYDATINA PHYsIS, Linne. 
Pilsbry, foc. cit., p. 387, pl. xlv., figs. 14, 15, 16, 17. 
Mr. G. Sweet found a young shell of this world wide species. 
RINGICULA PARVULA, Sp. nov. 
(Fig. 48). 
Shell very small, broad, solid, milk-white 
and glossy. Whorls rounded, chanelled 
at the suture ; incised by half a dozen sharp 
narrow grooves at and below the periphery. 
The mouth armature consists of a large 
blunt tooth in the middle of the outer lip, 
an elevated and much compressed one on 
the body whorl and two others, distant, 
rounded and oblique on the columella. 
Length 1:6, breadth 1 mm. 
Differs in dentition and contour from 
R. mariei, Morelet, and R. acuta v. minuta, 
H. Adams, and in its minute size from all 
others of the genus. 
tee One specimen from the lagoon beach. 
ELYSIA NIGROPUNCTATA, Pease, var. SANGUINBA, var. nov. 
(Fig. 49). 
= This variety differs from the type figured 
Lae eircrek ore by Pease or Bergh* by being smaller by 
Fig. 49. one third, and having the tentacles and 
mantle border coloured a vivid crimson. 
One specimen was collected at low water on the extreme outer 
edge of the windward reef. 
Perhaps #. marginatus, Pease, is but another colour variety of 
the same species. 
PLECOTREMA BELLUM, H. & A. Adams. 
Sykes, Proc. Malac. Soc., i., 1895, p. 242. 
In reference to this species, Souverbie pathetically remarks 
that the wretched work of the Adams permits of no precise 
identification. Their baneful seed has here produced the usual 
crop of synonomy. My determination of a shell, once collected on 
* Pease—Am. Journ. Conch., vi., 1871, p. 304, pl. xxii., fig. 2 a,b,c, d.; 
Bergh—Journ. Mus. Godeffroy, i., 1873, p. 80, pl. ix., fig. 7. 
