344 RET. R. BOOG WATSOK ON THE 



The body is rather tumid, aud shaped like a Bulla. Sculpture. 

 Longitudinals — there are exceedingly faint hair-like lines of 

 growth, of which, at frequent intervals, one more distinct pro- 

 duces a slight undulation of the surface. Spirals — the whole shell 

 presents the microscopic and very superficial crimpings of the 

 genus, which become rather strong on the base ; there are also some 

 very superficial and extremely obsolete bandings or furrows and 

 ridges, which are scarcely appreciable. Besides these, the upper 

 half of the shell and the point of the base are scratched with fine 

 square-cut striae, which, with a little difiiculty, can be recog- 

 nized as formed of minute contiguous stipplings : these are very 

 remote in the middle of the shell, but towards either extremity 

 they become crowded, ^ic^erm^'s membranaceous. Colour wWie 

 with a faint ivory tinge. Grown consists only in the flatly 

 rounded margin of a very small pit-like depression in front of the 

 origin of the outer lip, which rises abruptly above the top of the 

 shell. Mouth curved, rather club- than pear-shaped, being gib- 

 bously enlarged in front and elongate and rather narrow behind. 

 Outer lip thickened, reflected, and sinuated above, where, curving 

 forwards, it rises in a tooth-like form above the crown ; from this 

 point it sweeps very equably round to the point of the pillar, the 

 curve being very slightly flattened above, and somewhat full on 

 the base : it is patulous throughout : the very thin edge is nowhere 

 very prominent. Inner lip roundly convex on the body, bluntly 

 angulated at the base of the short scarcely curved and barely 

 truncate pillar. A thickish and rather prominent glaze joins the 

 two extremities of the outer lip : near its edge on the upper part 

 of the body this glaze has a few irregular rounded tubercles : 

 on the base, where it is thickened to a pad, these tubercles increase 

 in size and number, while the reverted pillar-lip is harshly 

 covered with them. The pillar-lip is not quite closely appressed, 

 having an overhanging edge and a closed chink behind it. H. 1*15. 

 B. 0'8. Greatest breadth of mouth 0*56. 



Having only one specimen of this species under examination, 

 it is impossible to say whether the roughening of the labial glaze 

 is a specific feature, as in some of the Yolutes, or the result of 

 disease. In this species the general form of the shell, and espe- 

 cially that of the body-whorl, is even liker a Bulla than is the 

 case with S. punctostriatus, Migh. ; but the apex is not perfo- 

 rated. As in that species one, looking up the pillar, can only see 

 a single complete whorl. The minute stippling of the sjDirals 



