220 RECORDS OF THE AUSTRALIAN MUSBUM. 
that name was invalid because Adams and Mighels, of Boston, had 
employed it two years before Hinds.1! In consequence Adams, in 1850,12 
offered Plewrotomu reevei to replace the second Plewrotoma violucea. Un- 
fortunately for this proposal, Bellardi!® had already engaged the name 
Pleurotomu reevei for an [talian fossil. It has been suggested that Plewro- 
toma nivew Philippi applied to Plewrotoma violucea Hinds, but that 
Formosan shell has not been figured, and the identification is uncertain. 
A recent revision by Messrs. Bouge and Dautzenberg } of this species, or 
group of species, unites under Plewrotoma vertebrutu Smith 16 all the species 
above mentioned, together with Oligotoma makimonos Jousseaume.!” 
Contrasting the Sydney shell with the figure of that which was 
dredged by H.M.S. “Sulphur,” in the Strait of Macassar, considerable 
difference appears. The purple colour of Plewrotomu violucea does not 
occur on ours. The Malayan shell is shown with a concave profile, a 
slender tapering summit, an inflated body whorl and a produced canal— 
which features do not match our shell. It is suggested that these are 
different species. Japanese specimens of Plewrotomu vertebrutu are smaller, 
more slender, more coarsely sculptured, and coloured differently to 
Asthenotomu subtilinea. In size and general appearance our shell agrees 
with Oligotoma makimonos Jousseaume, but has finer and more numerous 
spirals. Under these circumstances its identity is best preserved by 
describing it as distinct. 
Shell rather large and solid, cylindro-conic, tapering evenly. Colour 
uniform grey. Whorls ten. Sculpture:—On the penultimate are five 
larger and five smaller spirals; on the last whorl are twenty-five spirals, 
of which seven are on the snout, besides uncounted threads, one in each 
of the broader furrows; numerous close-set radial threads lattice the 
spaces between the main spirals, but do not cross them ; three spirals run 
along the fasciole, the outer rows of radial bars there contained are set in 
chevron. Aperture pyriform, outer lip simple; notch on the shoulder, 
rather deeply incised; canal short; columella sharply bent below. Length 
22 mm., breadth 8 mm. 
Hab. N.S. Wales:—Port Jackson (type); Port Stephens (old coll.); 
8 fathoms, Green Point, Watson’s Bay (Brazier). Queensland :—20 to 27 
fathoms, off Mast Head Reef (self); beach at mouth of Annam River (self). 
FILODRILLIA gen. 100. 
Filodrillia is a group from deep water which resembles Hiremu in the 
form of the sinus, but not of the protoconch, but differs in the thin slender 
shell, turreted whorls, absence of ribs and varix. Spiral sculpture pre- 
dominates. 
Type Drillia tricarinatu Tenison- Woods. 
Pleurotoma ulbulu Hutton, represents this genus in New Zealand, and 
Pleurotoma dilectoides Chapman and Gabriel, in the Australian Tertiary. 
11 Hinds—Proe. Boston Soc. Nat. Hist., i., 1841, p. 50. 
12 Adams—Contributions to Conchology, 1850, p. 54. 
13 Bellardi—Monoer. Pleurot., 1847, p. 55, pl. iii., fig. 20. 
14 Philippi—Zeit. f. Malak., viii., 1851, p. 92. 
15 Bouge and Dautzenberg—Journ. de Conch., Ixi., 1914, p. 130. 
§ Smith—Proce. Zool. Soc., 1879, p. 186, pl. xix., fic. 6. 
M% Jousseaume—Bull. Soc. Zool. France, viil., 1883, p. 198, pl. x., fig. 4. 
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