HELIX. 59 



H. ARANE^TELA, Heude. PL 12, figs. 99-1. 



Rather widely umbilicated, thin, yellowish brown, strongly cos- 

 tate, sparsely scaly, suture impressed ; whorls 5, slowly increasing ; 

 peristome acute, scarcely expanded. Diam. 9 mill. 



Tchenkeou, China. 



H. MATAIENSIS, Nevill. PI. 12, figs. 6-8. 



Moderately umbilicated, costulate above, less strongly below, 

 white, irregularly mottled with pale corneous, suture well impressed ; 

 whorls 5j, the last only carinated ; peristome simple, expanded. 



Diam. 13'5 mill. 



Mataian, E. Turkestan. 



H. TECTUM-SINENSE, Mart. PI. 12, fig. 2. 



Perforate, with strong, curved, somewhat distant ribs above, 

 sometimes branching, below the ribs are closer, anastomosing; 

 whorls 62, undulately carinated, last whorl a little descending in 

 front; peristome thickened, expanded. Diam. 16'5-21 mill. 



Prov. Shantung, China. 



H. ZENONIS, Gredler. (Unfigured.) . Tsinanfu, China. 



Unfigured Species of Plectotropis. 



H. TROCHULA, H. SCABRICULA, H. SETOCiNCTA, A. Adams. Japan. 

 H. MICROTROCHUS, H. APPLANATA, Moll. China. 



H. SQUAMULIFERA, Moll. Ins. Bongao, near Borneo. 



H. OSBECKII, Phil. Loo Choo Is. 



H. REPANDA, Pfr. Cambodia. 



H. CASEUS, Pfr. Siam. 



H. PILISPARSA, Martens. Celebes. 



Section II. AEGISTA, Albers. 1850. 



H. OCULUS, Pfr. PI. 13, fig. 13. 



Widely umbilicated, rather thin, closely rugosely plicate above, 

 brownish, suture impressed; whorls 8, somewhat convex, the last 

 shortly descending in front, periphery subangular, white banded, 

 base convex, striate ; lip thin, subangulately reflected. 



Diam. 25 mill. 



Ins. Typinsan and Meikoshima, China Sea* 



H. Typinsana, Ads. and Reeve, is a synonym. 



