256 ■ rf;coki>s of the atstraijax MrsEUM. 



Shell small, subcyliudrical, solid, and very glossy. Colour ice-white. 

 Whorls seven, inclusive of the protoconch — a small smooth dome of two 

 Avhorls. Sculpture : — The only spirals are four lines on the snout ; ribs 

 broad and low, crowded above, and becoming more spaced as growth 

 proceeds ; evanesceiit on the last half whorl, discontinuous from whoi-1 to 

 whorl, amounting to eight on the penultimate, sometimes lightly impi'essed 

 and sometimes interrupted by the fasciole, which is not otherwise apparent. 

 Suture sinuate. Aperture fusiform ; outer lip expanded and bent inwai'ds, 

 thickened on its outer edge, insinuate at the base ; sinus deeper than the 

 canal, with a slightly raised rim, the entrance contracted ; on the inner 

 lip is a callus sheet, thickening at the posterior angle to a tubercle ; canal 

 a mere notch. Length 11 mm., breadth 2'5 mm. 



This species has a general resemblance to Pleurotoina persica Smith) 

 but that differs by larger size, furrows on the base, and a constricted 

 fasciole. 



Hab. Queensland : — 10 fathoms. Cape Sidmouth (tj'pe, A. U. Henn) ; 

 4 to 14 fathoms, Albany Passage (self) ; 20 fathoms, Daruley Island 

 (Brazier). 



Clavds COSTATUS ^11. UOV. 



(Plate xlv., figs. 48, 49.) 



Shell small, ovate-elongate, solid and compact. Colour dull white, 

 the summit buff-yellow, base anterior to the insertion of the lip pale 

 orange-yellow : along the suture are irregular chocolate splashes. Whorls 

 seven, including a protoconch of two depressed whorls. Sculpture : — 

 There are eight thick and prominent ribs to a whorl; these descend the 

 shell vertically and continuously ; on the base they are slightly flexed, 

 and each terminates anteriorly in a bead ; both ribs and interstices are 

 engraved by very minute and dense spiral stiia?; the snout is traversed 

 by a few coarse spirals, which cease at the bead row ; on the smooth 

 glossy protoconch is a pronounced median keel, which ends abi'uptl}' at 

 the topmost rib. Aperture pyriform, {)roduced into a shoi-t, wide, open 

 canal ; behind the lip is a piominent varix which, rising above the suture, 

 filhs an intervariceal space on the preceding whoil ; a substantial callus 

 sheet spreads on the inner lip, and a tubercle is formed near the right 

 insertion ; just in front of the canal is a slight insinuation of the outer 

 lip. Length of specimen drawn 6 mm., breadth o mm.; another specimen, 

 length 9 mm., bieadth 3'5 mm. 



Hab. Queensland : — 12 fathoms, Daruley Island (Brazier). 



Clavcs OYCNEfs Mrlnll and St'imhui. 



DriJIiii vitPih-i Brazier, Proc. Linn. Soc. N.S.W., i., 1876, p. 154 (not 

 ( 'hinitiihi iilfe)is Hinds, Zool. Sulpliui-, ii., 1844, p. 20, pi. vi., tig. 17). 



JJrilliii t'ljijHeu Melvill and Standen, Journ. of Conch., viii., li^97, p. 379, 

 pi. xi., fig. 82. /'/. Bonge and Dautzenberg, Jc)urn. de Conch., Ixi., 

 1914, p. 137. 



Ihdi. Queensland: — 25 to 30 fathoms, Darnley Island; 11 fathoms, 

 Palm Island (Biazier); 5 to 10 fathoms, Hope Island (self). 



