THE NAUTILUS. 



border of the lip more or less thickened, pink or lilac colored, the 

 throat paler. Whorls 5 to 5^. 



Alt. 17, diam. 19 mm. 



Alt. 15 to 15^, diam. 17 mm. 



Kikaiga-shima, Oshima group, Osumi. 



The fossil specimens from Kikaiga-shima belong to the larger 

 typical form, which also still exists in the living fauna of the island, 

 practically indistinguishable from the Okinawa shells, and showing 

 the same color variations, from brownish-pink to a whitish straw tint. 



) . 

 Punctnm morseannm n. sp. 



Shell umbilicate, depressed, convex, low conic above, convex be- 

 neath, thin, brownish-corneous. Surface slightly shining, nearly 

 smooth, but there are a few irregular and low thread-like striae of 

 growth. Whorls 3^. convex, separated by a well-impressed suture, 

 the last whorl rounded at the periphery, convex beneath. Aperture 

 oblique, rounded, somewhat less than one-fourth of the circle excised 

 at the parietal wall. Peristome simple and thin, the columellar 

 margin dilated. Width of the umbilicus one-sixth the diameter of 

 the shell. Alt. 0.73, diam. 1.9 mm. 



Hirado, Hizen, in western Kyushu. Types no. 83024 A. N. S. P., 

 from no. 5535 of Mr. Hirase's collection. 



This species is much larger than P. japonicum Pils. It differs 

 from P. amblygona (Reinh.) and its variety pretiosum (Gude) in the 

 rounded periphery and smoother surface. P. leptum (Westerl.), de- 

 scribed from Nagasaki, which is not known to me by specimens, is 

 apparently different in its sculpture of delicate, crowded, cuticular 

 lamella;, and in tiie obtuse angulation of the last whorl. 



Prof. E. S. Morse informs me that he has demonstrated the exist- 

 ence of the genus Punctnm in Japan by examination of the jaw. 

 The species he worked on has not been determined, but it may not 

 unlikely prove to be amblygona Reinh., as that occurs in the region 

 of Tokyo. The described Japanese species mentioned above I have 

 referred to Punctum from their shell-characters only. All of them 

 are extremely small. 



Hirasea acuta n. sp. Shell solid, biconvex, acutely carinate at 

 the periphery, densely and finely striate above, and decussated with 

 fine spirals below; brown, paler or whitish around the perforation ; 

 whorls slightly over 4, flat, the last deflexed in front, contracted at 



