16 TF1E CONCHOLOGICAL MAGAZINE. 



Eulota ( JEgistai tenuissima n. sp. (figs, i, 2. 3.) 



The shell is very thin and light, discoidal, the spire convex, the 

 periphery rather acutely angular ; pale yellowish brown, translu- 

 cent, broadly umbilicatc, the umbilicus perspective, fully one-third 

 the total diameter of the shell. Surface glossy, irregularly, fine- 

 ly striate, and very finely, obsoletely striate spirally, whorls 6^, 

 slowly, regularly increasing, the last shortly descending in front, 

 flattened below the peripheral angle, rounded basally. The 

 aperture is quite oblique, rounded, but slightly lunate; the di- 

 ameter and oblique height are equal. Peristome narrowly reflex- 

 ed, thin, or having a very slight white thickening within. 



Alt. 9.7, diam. 23 mm. ; whorls 6]/ 2 . 

 " 9, " 20.5 " 



Fusan, Corea. Cotypes no. 94731 A. N. S. P., and no. 1459 

 of Hirase's collection. 



This species has the general appearance and sculpture of 

 sEgista, but the periphery is acutely angular, as in Plcctotropis. 

 It is remarkable for its extreme thinness. No Japanese or 

 Chinese species known to us is closely related. 



Clausilia fusaniana n. sp. (figs. 7, 8.) 



An Euphacdusa of the group of C. aculus, resembling that 

 species in shape and general appearance ; thin ; brown, paler be- 

 low the suture. Surface glossy, distinctly and finely striate 

 throughout except the first three whorls, the striae weaker onthe 

 penultimate whorl, perceptibly stronger on the last half of the last 

 whorl; but frequently the shell is more or less worn or corroded, 

 and it is then light gray, with the sculpture indistinct. There 

 are 11 to 12 strongly convex whorls, the first 2^ forming a 

 cylinder scarcely I millimeter in diameter; the rest increasing 

 slowly to the penultimate whorl, which is widest. The last 

 whorl is distinctly flattened at the side, convex below. The 

 aperture is small, one-fifth the total length of the shell, ovate, 

 with a well-defined, slightly retracted sinulus. The peristome is 

 thick or very thick, well reflexed, free above, being carried for- 

 ward a short distance from the preceding whorl. The superior 

 lamella is low and small, reaching the margin, and separated from 



