TORNATELLIDES, JAPAN AND POLYNESIA. 197 



A few immature shells from Kitaiwo-jima, Sulphur Is., 

 seem to belong to this species, which has a rather remarkable 

 distribution. Some of the other small shells of the islands of 

 Izu are closely related to Loochooan species. 



3. T. TRYONI P. & C., 11. sp. PL 44, figs. 2, 3. 



Shell minute, conic, rather openly umbilicate, thin, pale 

 corneous-brown, subtranslucent, smooth, except for slight 

 growth-lines, glossy. Outlines of spire straight, the apex ob- 

 tuse. Whorls 5*4, not very convex, the last well rounded at 

 the periphery and beneath. Aperture irregularly ovate, 

 slightly oblique, the peristome thin, outer lip unexpanded, 

 columellar margin rather broadly dilated and somewhat re- 

 flexed. Columella a little convex, vertical. Parietal wall 

 bearing 1 a very small, short, thread-like, median, entering la- 

 mella. Length 1 3, diam. 2 mm. 



Bonin Is. (Ogasawara-jima) : Haha-jima, type loc., Ani- 

 jima, Nakano-jima and Mei-jima (Hirase). Type no. 82669 

 A. N. S. P. 



Decidedly stouter in figure than T. boeningi or inexpec- 

 tatus, with a much smaller and shorter parietal lamella. 

 Named for George W. Tryon, Jr., founder of the MANUAL. 



2. Species of Polynesia to New Zealand, etc. 

 T. pusilla (Gould) was described as perforate, but there is 

 reason for thinking this an error of observation. See p. 176. 



4. T. SIMPLEX (Pease). PI. 44, figs. 8, 9, 10. 



Shell conic-ovate, broadly umbilicate, thin, pellucid, glossy, 

 brown-corneous ; spire conic, acute ; whorls 5, convex, the last 

 hardly half the length of the shell; suture impressed; aper- 

 ture subauriform; lip thin, acute; columella widely reflexed 

 above, base rounded. Length 3, diam. 1^ mm. (Pease). 



Society Islands: Tahaa (type loc.), Tahiti, Huaheine ( Gar- 

 re tt). Marquesas (C. D. Voy). Cook's Is.: Barotonga (Gar- 

 rett). 



"This species is distributed throughout all the groups of 

 islands in southeastern Polynesia; on the ground, in forests " 

 (Garrett). 



