88 -^rl, 1. — M. Yokoyama : 



bering thirteen on the body-whorl. Spaces between ril)lets finely 

 and indistinctly spirally striate. Aperture subcircular witli a broad 

 peristome. Height 5.5 millini. Diameter 3 milli m . 



A single specimen lacking the apex. The numlci- of whorls 

 seems to be about eight. The apical angle of the shell is about 35°. 



This species looks like Scalaria denticidata Sow. (Thes. 

 Conch., I, pi. 32, figs. 25, 26) from the Philippines which, howe- 

 ver, has a less number of riblets. 



Fossil occurrence. — Otake. 



Living. — Central Japan. 



120. Se€ilarin coitjiniefa, Yokoyama. 

 PL IV. Fig. 18. 



Shell turriculate. Whorls convex, longitudinallv costellate. 

 Costellae lamellar, erect, low, equal, about twenty-five on the 

 body-whorl, occasionally continuous from one whorl to the other. 

 Interspaces smooth. Aperture subcircular, surrounded by a some- 

 what broad peristome. Height about 13 niillim. Diameter 4.5 

 millim. 



A single specimen lacking the apex. The whorls preserved 

 are eight in number. 



A very small specimen only 4 millim. high from Shito seems 

 to be a young of this species. The number of whorls is seven. 



Fossil occurrence. — Tega, Shito(?) 



131. Sctilnria sftb/rond ietila, Yokoyama. 

 PL IV. Fig. 19. 



Shell turriculate, many-whorled. Wiiorls convex, with about 

 fourteen longitudinal, somewhat ol4ique, lamellar, equal riblets 

 aculeate at shoulders. Interspaces between riblets smooth. 

 Aperture roundly elliptical. 



A single specimen lacking the apux. 14ie whorls preserved 

 are eight, measuring 20 millim. in height and 7 millim. in 

 diameter. 



This species is very much like Scalaria fron.dicula Wood (Crag 



