54 THE NAUTILUS. 



Kita-Iwojima, Izu. Types no. 84965, A. N. S. P., from no. 1094 

 of Mr. Hirase's collection. 



An extraordinary species, very unlike any other yet known from 

 the region. Kita-Iwojima is one of the Sulphur or Volcano Islands, 

 a little group lying southwest of the Ogasawara group, and on a line 

 with the Izushichito group, or " Seven islands of Izu." They were 

 discovered by Bernard de Torres in 1543, and are governed by 

 Japan from the Ogasawara Is. Volcanic forces are still active in 

 this group, which is regarded by Yoshiwara as a continuation of the 

 Fuji chain, rather than orogenically belonging to the Ogasawaran 

 volcanic chain. 



The following species of land shells have been found on Kita- 

 Iwojima : 



Tornatellina inexpectata Pils. 



Tornatellina kitaiwojimana Pils. 



Tornatellina hataiana Pils. 



Opeas gracile ogasawaranwn Pils. 



Kaliella prsealta var. izushichitoensis n. v. 



Shell smaller than K. praefilta, with decidedly stronger peripheral 

 angle. Brown, somewhat transparent. 



Miyakejima, Izu. Types no. 84961, A. N. S. P., from no. 1060a 

 of Mr. Hirase's collection. Also, Niijima, Izu, no. 1060 of Mr. 

 Hirase's collection. 



Kaliella nesiotica n. sp. 



Shell conic, with very slightly convex lateral outlines, obtuse sum- 

 mit, acutely th read-car inate periphery and slightly convex base; 

 transparent brown. Whorls fully 6, slightly convex, parted by a 

 suture in which the fine thread-like keel ascends. Sculpture of ex- 

 tremely minute, rather widely-spaced hair-striae. Aperture basal, 

 squarish, the columellar margin reflexed above. Alt. 3.6, diam. 

 3.2 mm. 



Miyakejima, Izu. Types no. 84964, A. N. S. P., from no. 1072 

 of Mr. Hirase's collection. 



Near K. crenulata Gude, but the excessively fine hair-like striae 

 are much more widely spaced in this species. 



Sitala niijimana n. sp. 



Shell minutely perforate, with conic spire, obtuse apex, strongly 



