THE MOLLUSCA— HEDLEY. 483 
as the waist of the shell, then curving outwards. Columella 
broad, sinuate, folded over a slight umbilical chink. Callus on 
body whorl distinct, forming a decided angle posteriorly. Length 
1}, breadth 1 mm. 
Three specimens from the lagoon beach. 
This species perhaps stands nearest to &. amphizosta, Watson,* 
from which it is easily distinguished by the even more puffed 
anterior half, the descent of the last whorl, and by the coarser, 
more prominent sculpture. The young shells differ altogether in 
contour from the adult, but may be recognised by their peculiar 
sculpture. 
This novelty is named in honour of my accomplished friend, 
Lieutenant A. Waugh, R.N., of H.M.S. “ Penguin,” who, during 
the Expedition to Funafuti, as on many previous occasions, afforded 
his hearty aid and sympathy to every scientific undertaking. 
Arys cytinprica, Helbling. 
Pilsbry, Man. Conch., xv., 1893, p. 265, pl. xxxiii., figs. 60 — 64. 
Abundant on the lagoon beach, 
This common Pacific shell ranges in Australia from Torres 
Straits southwards to Port Stephens, N.S.W.; the “ Challenger ” 
met it in Fiji; I took it at Noumea, New Caledonia, and the 
Museum has received from Mr. N. Hardy a specimen he collected 
at Aneiteum, New Hebrides. 
ATYS HYALINA, Watson. 
Pilsbry, loc. cit., p. 271, pl. xxxii., fig. 36. 
A single broken specimen from the Funafuti lagoon agrees with 
specimens in the Museum from a type locality, Torres Straits. 
The ‘ Challenger” procured this from Fiji, and doubtfully from 
Honolulu. 
ATYS DENTIFERA, 4. Adams. 
Pilsbry, loc. cit., p. 276, pl. xxvii., fig. 81. 
The occurrence of several specimens on the lagoon beach of 
Funafuti points to a range across the whole Pacific, since this 
habitat is intermediate between Marutea, Paumotus, in the 
extreme east, where it was first discovered by Hugh Cuming, and 
Torres Straits in the extreme west, where it was taken by the 
“Challenger,” as also at Fiji. Mr. H. Smithurst has presented 
to the Museum a specimen he collected at Milne Bay, British 
New Guinea. 
* Watson—Chall. Rep., Zool., xv., 1886, p. 652, pl. xlviii., fig. 11. 
