A REVISION OF THK AI'STRAM AN inRRin^f: — IIEDI.KV. 239 



tlie outer lip is tin-ned inwards, giving rise to a sliori free edge. The 

 callus oil the coluinoUa is a thick sheet, the anterior edge oC which is Tree 

 from the preceding wliorl. Length 16 mm., breadth 55 mm. 



This species is closely allied to and perhaps a variety of I. spaldingi 

 Brazier. The differences are that Jjbriitns is longer and narrower, witli 

 more ribs and more prominent spirals, and especially with a secondary 

 sculpture of minute hair lines which develop into a subsutural row of 

 close minute prickles. 



Hdb. Queensland: — -i to 14 fathoms, Albany Passage (type, self) ; 

 Cape York ; Darnley Island (Brazier) ; Facing Island ; Port Curtis 

 (Kesteven). 



Inquisitor fi.indersianus xp. nov. 



(Plate xliv., fig. 28.) 



PJeurotohm nUthaster var. Brazier, Proc. Linn. Soc. N.S.W., i., 1876, p. 154 

 (not P. alahnster Reeve). 



Shell rather large and solid, slender fusiform. Whorls eleven. 

 Colour ochraceous-salmon, with a pale zone on the shoulder. Sculpture : — 

 Fasciole slightly excavate, crossed by crescentic lines, and traversed by 

 fine threads; ribs discontinuous, oblique, widely spaced, round-backed, 

 bolder on the upper whorls, disappearing on the ventral side of the last 

 whorl, but re-appearing on the dorsal ; set at twelve to a whorl ; spirals 

 are flat-topped cords which over-ride the ribs — about twenty-two on the 

 last whorl and five or seven on the upper whorls ; their furrows ai'e 

 crossed by microscopic hair lines, and often traversed by an interstitial 

 thread. Aperture : — Mouth narrow ; varix broad and low, about its own 

 breadth within the edge of tlie free flap which stretches across the mouth ; 

 sinus deep, oblique, narrowed at the entrance; columella straight; inner 

 lip with a raised margin; canal short, open. Length 31 mm., breadth 

 11 mm. 



Hah. Queensland : — 10 fathoms, Mapoon (type) ; 4 to 14 fathoms, 

 Albany Passage; 5 to 8 fathoms, Murray Island (self); 30 fathoms, 

 Darnley Island (Brazier). 



InQI'ISTTOR F0RMIDAB1LI8 .vj/. iinv. 



(Plate xliv., fig. 29.) 



Shell large but comparatively thin, fusiform, subturreted, sharply 

 pointed; spire produced; base contracted. Whorls thirteen. Colour 

 grey-buff, maculated witli chestnut at the sutures. Sculpture : — The 

 radials are oblique, wide-spaced, low peripheral nodular riblets, ten on the 

 penultimate, and eleven on the last whorl ; on the earlier whorls the ribs 

 ascend the spire perpendicularly and continuously, but on the lower 

 whorls they are less developed and less regular; there is a secondary 

 sculpture of fine radial threads which sometimes crowd the interstitial 

 spaces of tlie spirals ; on the last whorl are about thirty-two broad spiral 

 cords, and on the penultimate ten ; in their interstices one or more spiral 



