220 KKCOUnS iiF THE AUSTRALIAN MUSEUM. 



that name was invalid because Adams and Mighels, of Boston, had 

 employed it two years before Hinds. ii In consequence Adams, in 1850,i- 

 offered I'h'iiroh.nnn reevei to replace the second Plearotoma oiolac.ea. Un- 

 fortunately for this proposal, Bellardi ^'^ had already engaged the name 

 PJeiirotoDia reevei for an Italian fossil. It has been suggested that I'lenro- 

 toiiiK iiirei( Philippi i+ applied to Plenrotniini r/iulnren Hinds, but that 

 Forniosau shell has not been figured, and the identification is uncertain. 

 A lecent revision by Messrs. Bouge and Dautzenberg i^ of this .s[)ecjes, or 

 group of species, unites under Fleiinitonia verteljndu Smith ^^ all the species 

 above mentioned, together with Oliijotmiui m(i},-i)u<)HOs- Jousseanme.^" 



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 PlenrotoiiiK viohu-en does not 

 occur on ours. The Malayan shell is shown with a concave profile, a 

 slender tapering summil, an inflated body whorl and a produced canal — 

 which features do not matcli oui' shell. It is suggested that these are 

 different species. Japanese specimens of Fleurutonin vertehnita are smaller, 

 more slender, more coarsely sculptured, and coloured differently to 

 Adhenotonm xnlitiliiiea. In size and general appearance oui shell agrees 

 with OligotniuK ninliimoihix Joiisseaume, 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 S()irals ; on the last whorl are twenty-five spirals, 

 of which seven are on tlie 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 I'ows of ladial bai's there contained are set in 

 chevron. Aperture pyriform, outer lip simple; notch on the shoulder, 

 rather deeply incised ; canal slioi-t ; columella sharply bent below. liength 

 22 mm., bieadth 8 mm. 



Hah. 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). 



FiLODFtlLMA (jeit. Iinr. 



Filndrllliii is a group from deep water which resembles Efreimi in the 

 form (>f the sinns, but not of the protoconch, but diffei's in the thin slender 

 shell, turreted whorls, absence of ribs and vai'i.x. Spiral sculptui'e pre- 

 dominates. 



Type I'rilliii hirtirliiata Tenison- Woods. 



l'l,eurut(jina nlbida Hutton, represents this genus in New Zealand, and 

 f'learotovia dilectoides Chapman and Gabriel, in the Australian Tertiary. 



J' Hinds— Proc. Boston Soc. Nat. Hist., i., 18-H, p. 50. 



'- Adams — Contributions to Concliology, 1850, \>. 51. 



'•' Bellarili— Monogr. Pleurot., 18-i7, p. 55, pi. iii.. Hi,'. 20. 



'^ Philippi— Zeit. f. Malak., viii., 1851, p. 92. 



" Bmige and Dautzonherg — Jonrn. de Conch., l,\i., lUl-t, p. i:^o. 



'« Smith — Proo. Zool. Soc, 1879, p. 186, pi. xix., fig. 6. 



" Jousseaunie — Bull. Soc. Zool. France, viii., 1883, p. 198, pi. x., fig. 4. 



