■250 RECORDS OF THE Al'STKAIlAN MISETM. 



Sir Joseph Veivo observed*"- that the operculum of Dn'Uia harpnlarin 

 requires the transference of that species from Turritiiiiv to Chiratidiine. 

 Agreeable to the sng^gestions of Weiukauft" aud Verco, and pending further 

 information on the opercular and other charactei"s, the following Australian 

 species are therefore tentatively givuped in a Cl'tC'itiiline genus. Drill in 

 btc-hnit'ini Hntton, from New Zealand, may be included here. 



M. bednitUi, ebnnie't and icoo'Ui are distinguished from the re>t by a 

 particularly gloss}"" surface, and absence of the usual spirals. To these 

 Drilli't hviiis Hntton, from south Xew Zealand, is related. To contain 

 these I propose a new sub-genus — !<pleiidrilli'i. with M. irood.-ii for type. 



MkiATOMA liEPNALLl Soirt'lhl/. 



Drillia bedmiUi Sowerbv, Proc. Malac. Soc, ii., 1S96, p. 25. pi. iii., tig. 3. 

 hi. Tate aud May/Proc. Liuu. Soc. N.S.W., xxvi., 1901, p. o6S. Id. 

 Verco, Ti-ans. Roy. Soc. S.A., xxxiii., 1909, p. 302. 



Hub. South Australia : — St. Vincent Gulf (type): "20 fathoms, St. 

 Fi'ancis Island (Verco). 



AIeLATOMA DAMPIEKIA S/). tlor. 



(Plate xlv., fig. 41.) 



Shell slender lanceolate, long, and solid. Colour uniform livid-brown 

 to rnsset-vinaceous. Whorls eleven, including a mucronate protoconch of 

 two whorls. Sculpture: — Surface in general polished: the fasciole a 

 broad and rather deeply sunken furrow, crossed by tine concentric growth 

 lines, and travei-sed by a median sulcus : above it runs a prominent sub- 

 sutural ridge ; between the fasciole and the anterior end are twenty-two 

 sfural grooves, which grow wider and deeper towards the base, and 

 smaller and more crowded on the snout ; the radial ribs are seventeen to 

 a whorl, prominent on the shoulder, and gradually vanishing towards 

 the base, higher on the penultimate, and decreasing towards the aperture. 

 Aperture pyriform ; lip simple: sinus U-shaped. n\tlier large : a boss of 

 callus near the insertion of the lip and a separate sheet of callus on the 

 lower columella ; canal short and wide. Length 30 nun., breadth 9 mm. 



This species resembles .1/. hnrpalnri'i, but is much larger, purplish in 

 colour, with weaker radials but stronger spiral scnlptui-e. 



Hid'. Western Australia : — Shark Bay (type in Macleay Museum). 



Mklato.ma i>rri.ARis .s-^). uov. 



(Plate xlv.. tig. 42.) 



Shell small, solid, lanceolate. Colour dull cream, with a faint dorsal 

 zone of bi'own. Whorls eight, including a two-whorled protoconch. 

 Sculpture: — The radials are smooth round-backed perpendicular ribs, 



«3 Verco— Trans. Roy. Soc. S.A., xxxiii., 1909, p. 296. 



