A u'KVisn^N oi" iiiK Ai'sriiAi.iAN in.'inD.i": — iikipi,kv. 279 



followed abont the periphery by three prominent cords, and anpaiii on the 

 base and snout by nine evenly s[)aced spiial threads ; over-ridden by these 

 spiials are about thirteen oblique riblets, which are faint on the shoulder, 

 prominent on the perif)heiy, where they foi-m with the spirals a cons[iicuons 

 open net- work, and vanish on the base; on the penultimate there aie 

 seven spii-als. Apertuie : — Tlie varix is prominent; under tlie fiee limb 

 of it are five small enterino; plait's ; the pillar is unarmed ; thecranal shoi-t, 

 straight, and effuse. Length 1-5 mm., breadth 1-5 mm. 



Apparentl}- this is close to MaagHiu rlm-i^ruljitd Melvill,'' whicli I 

 have not seen, but tlie Australian species may be differentiated b}' having 

 anterior spirals. 



Ihih. Queensland : — 4 to 14 fathoms, Albany Passage (type); 5 to 10 

 fathoms, Hope Island ; 15 fathoms. Palm Island ; 5 fathoms. Van Diemans 

 Inlet, Gulf of Carpentaria (self) ; 10 fathoms. Cape Sidmouth (Henn) ; 

 20 fathoms, off Endeavour Reef (McCullocb). 



Etrema FIRMA >ip. VOV. 



(Plate xlvii., fig. 78.) 



Shell small, very solid, and biconical. Colour ochraceons - buff, 

 darkening on the spire and within the aperture to ferruginous. Whorls 

 seven, including a protocouch of two and a half whorls, the last of 

 which is sharply, delicately, keeled. Suture impressed and undulating. 

 Sculpture: — The entii'e shell is encircled by comparatively coarse spiral 

 threads, a pair of which on the periphery exceed the rest in size; on the 

 last whoi'l these spirals amount to twent}'- three, and on the penultimate 

 to nine ; the radials assume the form of peripheral tubeicles, set at ten to 

 a whorl ; on the base each rib splits into two small riblets. Aperture: — 

 The varix is large and prominent, having four teeth on the oral margin ; 

 sinus broad and pouting; canal short and open; columella lip crossed by 

 four plications. Length 6 mm., breadth 3 mm. 



JliiJj. Queensland: — 5 to 10 fathoms, Hope Island (type, self). 



EtREMA (iLABRIPLlCATA iSoirerhy. 



(Plate xlvii., figs. 79, HO.) 



Glypliostorna gluhrijiliaUuiH Sowerby, Ann. Mag. Nat. Hist. (8), xii., 1913, 

 p. 233, pi. iii., fig. 1. 



!" PJeiirotonid craf<f!ihihriini var. hetii Reeve, Conch. Icon., i., 1843, {)!. xiv., 

 fig. 118a. 



(JIijjiJiostoiicK crassildbnirn var. rithintlssiini'-Jiriita Bouge and Dautzenberg, 

 Journ. de-Conch., Ixi., 1914, p. 175. 



This species is unrecorded for Australia. An e.xample from MuiTay 

 Island 13'5 mm. long, here figured, diiVeis slightly from typical Japanese 



"' Melvill— I'l'oc. Malac. Sue, x., 1912, p. 251, pi. xi., tig-. -14. 



