1908.] 



NATURAL SCIENCES OF PHILADELPHIA, 



41 



Alt. 6.5, diam. 9.2 mm.; aperture alt. 4, width 4.6 mm.; umbilicus 

 1.7 mm. wide. 



Alt. 6.5, diam. 9 mm. 



Hangchow, province Che-kiang, China. Types No. 94,741 A. N. 

 S. P., from No. 1,471 of Mr. Hirase's collection. 



A small, beautifully sculptured shell, which we are unable to identify 

 with any of Pere Heude's species from the lower Yangtse valley. It 

 has some resemblance to E. inornata and belongs to a group of 

 thin, dull species with the shell spirally engraved, cuticular scales small 

 or wanting, and usually with no peripheral fringe. Other species of tJiis 

 group are E. osbecki, inornata, hachijoensis, fulvicans, lautsi, micra, 

 perplexa, inrinensis, hebes, etc. 

 Chloritis impotens P. and H., n. sp. Fig. 5. 



Shell depressed-globose, narrowly umbilicate, thin and fragile, 

 corneous-brown. The surface has a somewhat silky sheen, and under 

 the lens is seen to be densely set with small granules, which are long 

 in the direction of growth-lines, and arranged in oblique, forwardly 

 descending rows, though this arrangement is not everywhere visible, 

 being in part or wholly lost near the mouth. This granular sculpture 

 extends almost to the apex, only the initial half whorl or less being 

 smoothish, though not glossy. On the last two whorls the granules 



Fig. 5. — C. impotens, basal, front and dorsal views, and sculpture of last whorl 

 below suture. 



bear short cuticular appendages in fresh, unworn shells, such as are 

 often present in Mgista and Plectotropis. The spire is low-conic. 

 Whorls 5, convex, at first slowly increasing, the last one abruptly 

 becoming much wider, about twice the width of the preceding, not 

 noticeably descending in front, rounded at the periphery. The aper- 

 ture is rounded -lunate, moderately obUque. Peristome thin throughout, 

 the outer and basal margins very slightly expanded, columellar mar- 

 gin broadly, triangularly dilated, half covering the umbilicus. 



Alt. 8.7, diam. 12.6 mm. ; alt. aperture 6.5, width 7.5 mm. 



Chifoo, province Pe-chih, China. Types No. 94,742 A. N. S. P., 

 from No. 1,468 of Mr. Hirase's collection. 



