214 
Waters) has taken it alive. This carries it a little farther 
north. In September of this year Mr. Arnold, of St. Francis 
Island, sent me a specimen in spirit which was taken alive in 
Petrel Bay. This measures 11 cm. by 9} cm., and has an 
operculum measuring 44 mm. by 39 mm., and 11 mm. in its 
thickest part. This thickest part is adjacent to the columella, 
and is white, while the part immediately over the depressed 
centre of the spiral and the narrower outer edge is of a 
cloudy-brown colour. 
From the animal I was able to get the radula, which 
measured 40 mm. by 5 mm., and contained 76 rows of teeth. 
The formula is 39.5.1.5.39, or, as it might more exactly be 
written, (32.6.1) (1.4) .1. (4.1) (1.6.32). There is a central 
tooth (pl. xxvii., fig. 6), which has a flange on each side to 
overlap the adjacent edge of its neighbours. Each of these 
laterals overlaps the next tooth outside. The outermost 
lateral (fig. 4) has its upper border bent over and provided 
with a strong cusp at its inner end. This gives it a different 
appearance from all its fellows, and when the whole series 
is seen this tooth stands out very prominently, as in pl. 
xxvil., fig. 4. There are three kinds of teeth in the 
marginals. ‘The first six (fig. 2) have stout bases surmounted 
by a bold polished cusp, and they gradually diminish in size 
outwardly, as seen in fig. 2 in sitw and in fig. 2a, when dis- 
sected cut; the three inner ones overlap the outer at their 
bases, and otherwise lie in part behind them. ‘The three 
outer have not this overlapping lamina. Then follow 32 
(approximately, varying in different rows) slightly-curved, 
narrow flat acicular teeth with obsoletely denticulated tops 
(fig. 1). But there is one tooth placed immediately behind 
the first and largest lateral, solitary, out of line with the 
rest, and when examined in sitw appearing somewhat sickle 
shaped, as in pl. xxvii., fig. 3; but when separated resembling 
the others, as in fig. 3a. I have not seen any notice of this 
particular marginal tooth in the literature of the radula at 
my disposal; but I find it also in that of Turbo Gruneri. 
Pseudamycla dermestoidea, Lamarck. 
Buccinum dermestoideum, Lamarck, 1822, Hist. Nat. Anim. 
S. Vert., vol. vii., p. 275 
Pyrene lineolata, Tryon, Verco, Trans. Roy. Soc., S.A., vol. 
xxxiv., 1910, p. 131. 
Pseudamycla dermestoidea_(Lam.), Pace, Proc. Mal. Soc., 
Lond., 1902, vol. v., pp. 255, 267. Here Pace creates a new genus, 
Pseudamycla, for this species, which he separates from Colum- 
bella, and of which he gives a large bibliography. At the time 
of its publication I separated my cabinet specimens from Colum- 
bella and put them in the new genus Pseudamycla among the 
