196 TOKNATELLIDES, JAPANESE ISLANDS. 



1. T. BOENINGI (Schmacker et Boettger). PL 44, figs. 5, 6, 7. 

 Shell widely perforate, conic-turrite, thin, diaphanous, 



glossy, pale corneous-brown. Spire almost exactly long-conic, 

 the apex rather acute. Whorls 6, a little convex, slowly in- 

 creasing, parted by a distinct suture, striatulate; the last 

 whorl moderately inflated, rotund, especially rounded-sub- 

 cristate around the umbilicus, almost one-third the alt. of the 

 shell. Aperture oblique, truncate-oval, with one lamella. 

 Peristome unexpanded, simple, the margins distant, right 

 margin regularly curved, columellar margin triangularly di- 

 lated above, protracted. Columella vertical, hardly twisted, 

 a little convex. There is a thin, low lamella in the middle of 

 the parietal wall, entering far within. Length S 1 /^, diam. 1%, 

 alt. aperture li/4, width % mm. (S. and B.). 



Formosa: Tamsui (Mr. G. Degener-Boening) . 



Tornatellina boeningi S. & B., Nachrichtsblatt d. Deutschen 

 Malak. Ges., xxiii, December, 1891, p. 180, pi. 2, f. 7. 



2. T. INEXPECTATUS (Pilsbry). PI. 44, figs. 1, 4. 



The shell is umbilicate ovate-pyramidal, cinnamon colored 

 or paler, glossy, growth -lines faint ; outlines of spire straight. 

 Whorls 5%, not very convex, the last rounded at the periph- 

 ery, convex below. Aperture irregularly ovate. Parietal la- 

 mella very low, nearly a half -whorl long. Peristome thin ; 

 columella slightly convex, outwardly broadly dilated and re- 

 flexed. Length 3, diam. 1.7 mm. 



Loochoo (Eynkyn) Islands: Great Loochoo (Yaeyama), 

 type loc. ; Kume-jima; Okinoerabushima (Hirase). Islands 

 of Izu: Hachijo-jima and Miyake-jima (Hirase). Types no. 

 80970 A. N. S. P. 



TornatelUna inexpectata PILS., Nautilus, xv, p. 23 (June, 

 1901). 



There are 110 columellar lamellae at any stage of growth. 

 While this shell appears to be a little less turrited than T. 

 boeningi of Formosa, and not especially prominent around the 

 umbilicus, yet it seems likely that the two are not specifically 

 distinct. Formosan specimens should be compared with the 

 Loochooan. 



