Fossils from the Upper Mnsashino of K'azusa and Shiuiosa. 87 



finer ones between. Aperture subcircular, surrounded by a broad 

 peristome. Umbilicus imperforate. 



Many specimens, all of which, however, lack the apex. The 

 one with eight whorls is 11 millim. in height and 4 millim. in 

 diameter. A large specimen with only three whorls preserved and 

 measuring 7 millim. in diameter shows three or four costellae on 

 each whorl stronger than others. 



Specimens from Oji where they are quite frequent show the 

 lamellar costellae higher and more prominent and the shoulder- 

 spines more acute. 



This species is closely related to tSccdaria eximia Adams and 

 Reeve (Voy. Samarang. p. 51, pi. XI, fig. 16), but longer. 



Fossil occurrence.— Otake (rare), Tega (do), Shito (do) Ojk 

 in Musashi. 



Living. — Central Japan (Sagami). 



lis. SealarUt lia.'^ttseusis, Yokoyama. 

 PI. IV. Fio-. 16. 



Shell small, turriculate. Whorls many (about eight ?), con- 

 vex, longitudinally costellate and spirally striate. Costellae rather 

 thick, lamellar, straight, equal, about twenty on the body-whorl. 

 Spiral striae between costellae fine, equal, distant. Aperture 

 subcircular, surrounded by a somewhat broad peristome. Height 

 1) millim. Diameter 3,5 millim. 



This species resembles the preceding, but is shorter and 

 without the shoulder-spine on the costellae which are also some- 

 what greater in number. 



Fossil occurrence. — Shito (rare). 



Living. — Central Japan (Sagami). 



119. Svalariu ynniahatcai, Yokoyama. 

 PI. IV. Fig. 17. 



Shell small, ovately turrete. Whorls convex, with rather 

 thick, lamellar, erect, equal riblcts aculeate at shoulders and num- 



