246 CANCELLARIIDiE. 



tremely short, and widely open : snout short, deeply bilobed, 

 jjlaced between the tentacles so as to keep them far apart : ten- 

 tacles rather long and tapering, with blunt tips, much thicker on 

 the lower third portion : eyes small and black ; stalks about 

 one-third the length of the tentacles : foot thick and narrow, 

 rounded and double-edged in front, with a small triangular 

 lobe at each corner, angulated and wedge-shaped behind. 



Shell turreted, somewhat spindle-shaped or pointed at each 

 end, with the base much shorter than the apex ; it is solid, 

 opaque, and lustreless : sculpture, several spiral coi-d-like 

 ridges or ribs, of which 3 or 4 on the body-whorl, and 2 on 

 each of the upper whorls are the strongest and most promi- 

 nent ; between these are smaller ribs, viz. '4 between the suture 

 and the uppermost of the principal ridges on the body- whorl, 

 J between that and each of the next two or three ridges, and 

 4 or 5 betwe(in the lowest ridge and the basal p(.'ak ; the whole 

 surface is also covered with micj-oscopic sjiiral lines ; }>eside8 

 the spiial sculpture the shell is closely and obliquely traversed 

 lengthwise by thie thread-like stria), so that the crests of the 

 ridges and smaller ribs are delicately beaded : colour whitish, 

 sometimes tinged with reddish-brown: epidermis pale yel- 

 lowish-brown, forming thorn-like i)oints or bristles on the 

 crests of the principal ridges ; these bristles are sometimes 

 double: spire considerably elongated and finely pointed : vjJtorls 

 7, moderately convex, but having a sharply angulated appear- 

 ance, owing to the promin<;nce of some of the spiral ri})s ; the 

 last occupies seven-twelfths of the spii'(3 (vicnved mouth down- 

 wards), and is somewhat dilated ; top whorl smooth and 

 glossy, twisted upwards: suture d(M3p, channelled between, the 

 lower two or three whorls but not betwec^n the u])per ones : 

 mouth inversely pear-shai)ed, somewhat exi)anding outwards, 

 not much more than half the lengtli of the spire ; inside white, 

 pale orange, or yell(jwish-})rown ; the })asa] groove is angular, 

 but not indicated by any notch in th(; outer margin : outn-lip 

 rounded, incurved on the pcjriphery, with thin and sculloped 

 edges, and fnnged by the epid(^rmis ; the inside, or throat of 

 the mouth, is grooved beneath the spiral ridges : inner 

 Up fiexuous, broad, and reflected on the pillar, to which it is 

 for the most part attached : pillar also flexuous, having near 

 its base a blunt fold, which extends oblicjuely upwards along 

 the spire ; below this fold is the short siphonal canal : umbi- 

 licus small, narrow, and curved : operculum obli(juely oval, 

 with a pointed termination, yellowisli-brown, composed of 



