^Q Art. 1. — M. Yokoyama: 



This species is clistinguislied from tlie foregoing by its shorter 

 and mo]-e ventricose form and also by I^roadl}^ channelled sutures. 

 The three folds of the columella-lip mentioned ];>y Sowerby are 

 more or less indistinct in our fossils, the two lower ones being 

 somewhat distant from the uppermost. The shoulder-tubercles 

 are '.more or less spiny in the fossil specimens as may be seen in 

 our figure and aho in that of Tokunaga. 



Fossil occurrence. — Otake, Kamenari, Tega, Shito. Oji in 

 Musashi. Rare at all the above places. 



Living. — Central and Western Japan. 



44. C'aneellarid tiftitet'ella, LatnareJi, rar. reeriditti, Crosse. 



PI. II. Fig. 2. 



Caucellaria UHpeicUa rar. reeriaim. Pilsbiy, Cat., p. 22. 



Cancellaria reeriamt. Danker, Iudex. Moll., p. 104. Lisclike, Jap. Meeresconch., II, p. 



56. Mart. u. Chemii., Syst. Couch. Cab., lY, part 8, p. 12, pi. II, figs. 7-9. Crosse, 



Jonr. de Coucb., IX, p. 287. 

 Cancellaria ele.ijans. Sowerby, Tiies. Couch., II, p. 41(3, pi. 98, fig. 36, pi. 96, fig. 104. 



Eeeve, Conch. Icon., X, pi. Ill, fig. 12. (Not C. elegans Desh.). 



This is a very variable species. In some specimens the shell is 

 thick, while in others it is rather thin. The whorls are somewhat 

 angulate a little above the middle and not convex throughout as 

 shown in the figures given in the ' ' Systematischen Conchylien- 

 Cabinet." But the general appearance is alike. The ribs number 

 sixteen or seventeen on the penultimate whorl. The spiral threads 

 number about four above the angle and five beluw it. The inter- 

 section-points of ribs and threads are more or less tuberculous. 

 Columella folds three, strong and oblique. On some specimens 

 there is a thin callus. The outer lip is either dentate or smooth 

 within. 



The specimens are all young, the largest measuring 19 millii,n. 

 in height and 10 millim. in diameter. Eare. 



Fossil occurrence. — Otake, Tega and Shito. 



Living. — Central and Western Japan. Philippines. 



