70 THE NADTILUS. 



the middle of the upper surface, the last also angular at the periph- 

 ery ; sculptured with narrow spiral cords, of which there are four 

 between the peripheral angle and the shoulder, the surface nearly 

 smooth or with one cord above the shoulder. Base with about nine 

 spiral cords. Whorls nearly 6. Aperture oblique, rounded, angular 

 at the base of the columella, smooth within. Columella straightened 

 in the middle. Umbilicus smooth and white within. Alt. 6, diam. 

 5.3 mm. 



Riukiu I. Types no. 82037 A. N. S. P., from no. 1318 of Mr. 

 Hirase's collection. 



Gibbula incarnata n. sp. 



Shell perforate or closed, turbinate, coral-red, uniform or with 

 some paler or whitish spots at the periphery, a small area around the 

 columella white. Sculptured with nearly smooth spiral cords as wide 

 as their intervals, nine in number on the penultimate whorl. On the 

 somewhat flattened base there are about 8 finer cords. Spire conic, 

 the apex obtuse. Whorls 5, convex, the last subangular around the 

 base. Aperture oblique, irregularly rounded, smooth within. Colu- 

 mella wide and calloused. Alt. 5.3, diam. 5. 



Kumihama, Tango. Types 82141 A. N. S. P., from no. 1323 of 

 Mr. Hirase's collection. 



Monilea (Rossiteria} nucleolus n. sp. 



Shell depressed globose-conic, narrowly umbilicate ; white with an 

 interrupted buff zone above, and conspicuously variegated with squar- 

 ish black-brown spots, of which there is a row of broad ones below 

 the suture (three or four on a whorl), a row of smaller ones just 

 above the periphery, and another on the base. Besides these, there 

 is an irregular articulation or dotting of dark brown on the spiral 

 cords. Surface glossy, sculptured with numerous very low and sub- 

 equal, nearly smooth, spiral threads, almost obsolete on the base, but 

 reappearing at the border of the umbilicus ; and showing under a 

 lens, subregular, close, longitudinal grooves, almost obsolete, but visi- 

 ble near the suture and umbilicus. Whorls 5, convex, the last well 

 rounded. Aperture oblique, the columellar margin deeply concave 

 in the middle ; columella abruptly truncate at the base. Outer lip 

 bevelled to a sharp edge, thickened and spirally lirate within. Alt. 

 5.6, diam. 6.3 mm. 



