‘ THE MOLLUSCA—HEDLEY. 419 
to have accepted the copy, bad beyond recognition, as original, and 
copied it* in preference to Souverbie’s. To the habitat he adds Fiji. 
As a synonym I would add the name of Rissoina quasillus, 
Melvill and Standen} from Lifu. Neither figure nor description 
of this are sufficient for decision, we are not told how many ribs 
there are, whether continuous or discontinuous, etc., yet there 
seems nothing incompatible between #. quasillusand the shell under 
discussion. That these authors should have failed to institute a 
comparison between their supposed novelty and a shell so similar 
from the same locality, suggests that they overlooked Souverbie’s 
description. 
Since so much confusion has enveloped A. exasperata, it is not 
superfluous to present a drawing (Fig. 10) and remarks upon the 
Funafuti specimens. 
Shell elongated, when well preserved slightly turriculated, 
varies slightly in being more slender or more stout. Dead shells 
are white. A fresh specimen has within the aperture four narrow, 
spiral lines of golden brown; outside, another such line colours 
the anterior spiral lyra of the antipenultimate whorl, two such 
‘the second and third of the penultimate, and three such the 
second, third, and fifth lyre respectively of the ultimate whorl. 
Other worn specimens show traces of this colour pattern. On the 
last whorl there are nineteen or twenty stout, narrow, erect, longi- 
tudinal ribs, half the breadth of their interstices ; these arise at 
the suture, and maintain an even size to the base, on attaining 
which they suddenly cease. These ribs are repeated on the pre- 
ceding whorls ; they are not continuous from whorl to whorl, but 
each arises and ends between the projections of predecessors and 
successors. They are fewer and relatively stronger on the earlier 
whorls, being indicated on the second and fully developed on the 
fourth. 
On the last whorl there are five spiral cords, which are half 
the height of the longitudinal ribs. At the point of intersection 
a bead arises on the ribs. The hollows in the lattice work thus 
formed are square and are minutely spirally striated. The base 
is encircled by two or three small and finely beaded lyre. Three 
spiral cords ascend for three whorls, growing weaker as they 
proceed. The first whorl is dome-shaped, and the second keeled. 
These specimens are 24 to 34 mm. long, and have seven to eight 
whorls. 
Occurred in the lagoon in shallow water. 
The Chevert Expedition reported this species from Palm and 
Darnley Islands, Queensland. The Museum also possesses a series 
presented by Mrs. J. G. Waterhouse, whocollected them at Lord Howe 
* Tryon—Man. Conch., ix., 1887, p. 384, pl. lvii., fig. 96. 
+ Melvill & Standen—Journ, Conch., yiii., 1897, p. 308, pl. xi., fig. 65, 
