220 RECORDS OF THE AUSTRALIAN JlUSEUJl. 



shell's axis. Colour pale brown, inner lip light purple. Whorls 

 six and a half, rapidly inci-easing. Sculpture : numerous varices, 

 eight to the last whorl, beset the shell. They are low, but erect, 

 feebly denticulate, descend obliquely from the shoulder to the 

 base, above the shoulder converge very obliquely to the suture 

 across an excavate unribbed space. On the upper whorls they 

 fade rapidly, becoming extinct on the penultimate. The inter- 

 variceal spaces are traversed by stout spiral ribs divided by broad 

 deei^ grooves, about a dozen appearing behind the aperture, no 

 scales occur on ribs or in grooves. Outer lip expanded, smooth, 

 within, denticulate without, edged with concentric frills. Inner 

 lip straight below, arched medially, its margin expanded, free. 

 Length 17 mm. ; breadth 13 mm. 



A single living specimen from two hundred and fifty fathoms, 

 which may not be adult. 



Plburotoma oasearia, sp. nov. 



(Plate xxxvii., fig. 5). 



.Shell thin, slender, fusiform, spire keeled and turreted, base 

 contracted. Whorls seven, including a whorl and a half of pro- 

 toconch, parted by linear rather oblique impressed sutures. 

 Colour varying from pearl grey to pale orange, usually cheese 

 colour. Sculpture : the protoconch is glassy with rounded whorls, 

 the adult smooth and somewhat glossy though duller tlian the 

 protoconcli. The periphery is sharply produced into a projecting 

 keel, the fasciole set with pointed radiating tubercles, of which 

 the penultimate whorl bears eighteen, these tubercles continue 

 upwards, diminisliing proportionately to the protoconch, but 

 downwards they degenerate on the last whorl to imbricating 

 scales. The unarmed keel slightly rises at its termination, 

 bringing the shelf above it nearer to the liorizontal. The fasciole 

 ends in a deep and narrow slit. Canal open, produced, bent a 

 little to the right. Under the lens, delicate growth lines appear 

 vrhich diverge acutely above and below the keel, crossing the base 

 they are fiexecl. Aperture narrowly pyriform, a callus spread on 

 tlie inner lip. Length 13 mm. ; breadth 5 mm. 



Several specimens were obtained. 



Bathytoma agnata, sp. nov. 

 (Plate xxxvii., fig. 3). 

 Shell fusiform, biconical, solid, each spire whorl prominently 



