354 



CALLIOSTOMA. 



but very little so on the base. Pillar lip is broad, strong, reverted, 

 channelled, twisted, and bluntly angulated, patulous, but not tooth- 

 ed at its junction with the base. 



Alt. '25, diam. '23 inch. ( Watson.') 



Off East Moncceur Island, Bass' Straits, in 38 fms. 



Trochus (Zizipklnus) tinctus WATSON, Challenger Rep., Gasterop., 

 p. 63, t. 17, f. 2. 



An inconspicuous but pretty little species, which, though small, 

 seems quite full-grown. ( Watson.') 



C. COMTUM Philippi. PI. 18, fig, 24. 



Shell conical, imperforate, solid, granulate, flesh-colored, painted 

 with radiating white streaks, the apex blackish-violet. Whorls little 

 convex, the last rounded-angulate, above a little concave, superior 

 whorls with 6 or 8 granulate cinguli, close, separated by a narrow 

 granulate line ; base granose-cingulate, principal cinguli about 8, 

 alternating with smaller ones. Aperture rhomboidal, depressed : 

 columella oblique, subtortuous, cylindrical. (Phil.) 



The shell is very solid, quite exactly conical. The 3 last whorls 

 are more strongly convex below, the last somewhat concave above ; 

 the uppermost are entirely flat; the basal angle is rounded ; the base 

 plane in a radial direction. The granules of the surface are hemi- 

 spherical, closely crowded ; on the third whorl I count 6 series of 

 them, between them are much narrower granose lines, which become 

 stronger and stronger until they attain the same prominence as the 

 principal series. The sculpture of the base is the same. The aperture 

 is depressed, rhomboidal, the outer lip superficially silicate within, 

 corresponding to the principal lirse of the outer surface. The 

 columella is oblique, somewhat twisted, cylindrical, without tooth at 

 base. It is flesh-colored, with white rays. 



Alt. 17, diam. 18 mill. (Philippi.} 



Habitat unknown. 



Tr. comtus PHIL., Conchyl. Cab., t. 324, t. 46, f. 6. 



C. TICAONICUM A. Adams. PI. 1, fig. 4. 



Shell elevated conical, perforate, buff or flesh-color, ornamented at 

 the suture with lirse articulated with rufous; whorls little rounded, 

 longitudinally striate, apex blackish-purple ; last whorl subangular ; 

 base a little convex, sculptured with rufous-articulated cinguli ; 



