200 PROCEEDINGS OF THE ACADEMY OF [March, 



Compared with the excessively variable C. japonicus (A. Ad.), 

 described as Zizyphinus japonieus, the present species differs in 

 being shorter and broader, with more convex whorls, less angular 

 periphery and smoother base, the concentric grooves being finer, 

 and not extending outward so far. 



Clanculus gemmulifer n. sp. 



Shell low-trochiform, solid, angular at the periphery, slightly 

 convex beneath. Ground-color red or dull red. Sculpture of 

 spiral cords cut into smooth rounded 'Jbeads, these cords a little 

 narrower than the intervals on the upper surface, smaller on the 

 base and about equal in width to their intervals. Above the peri- 

 phery on the last whorl there are five bead-rows, all of them 

 dotted, either having a black interval between two white beads, 

 or with a black and a white bead, the intervals consisting 

 of two or three red beads; base similarly" variegated, but the dots 

 are sometimes brown. Furrows between the bead-rows finely and 

 densely decussate by spiral and oblique raised striae or threads. 

 Spire straightly conic, the apex acute, roseate. Whorls about 6, 

 the last deflexed in front. Aperture oblique, contracted by a sim- 

 ple, rather compressed fold at the foot of the columella, and 

 another near the upper end of the outer lip, several small folds 

 between them. Columella contorted above, deeply entering the 

 false-umbilicus, the margin of which is toothed. Parietal callus 

 strongly plicate. 



Alt. 7.5, diam. 9 mm. 



Hirado, Hizen (Mr. Y. Hirase). 



Closely related to C. margaritarius Phil., which occurs at the 

 same locality, but is larger and more elevated, with more whorls, 

 and further differs in the trifid columellar tooth, more rounded 

 periphery, and in having the first and third bead-rows unspotted 

 except close to the aperture. A well -grown specimen of (7. mar- 

 garitarius measures: alt. 15, diam. 16 mm. C. unedo is a more 

 elevated species, with heavier columellar fold and some unspotted 

 bead-rows. 



Clanculus microdon var. ater n. v. 



Shell black with a few inconspicuous whitish dots and bright 

 rose apex, the coloration resembling C. atropurpureus Old. Spiral 

 lirse about 17 on the last whorl, with threads or minor line in some 



