IIKI.IX. 59 



H, ARANE^ETELA, Heude. PI. 1'J, tigs. !)!)-!. 



Rather widely umbilirated, tliin, yellowish brown, strongly cos- 

 tate, sparsely scaly, .suture impressed; whorls ">, slo\\ly in<Tra>ing : 

 peristome acute, scarcely expanded. Diam. !) mill. 



, China. 



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



Moderately umbilicated, costulate above, less strongly below, 

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

 whorls 5 1, the last only carinated ; pi-rislome simple, expanded. 



Diam. 13'5 mill. 



Mataiaii, E. Turkestan. 



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



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

 sometimes branching, below the ribs are closer, anastomosing; 

 whorls 5-2, undulately carinated, last whorl a little descending in 

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



Prov. Shantung, China. 



H. ZENONIS, Gredler. (Unfigured.) Tx'manfu, China. 



Unfigured Species of Plectotropis. 

 H. TROCHULA, H. SCABRTCULA, H. SETOCINCTA, A. Adams. Japan. 



H. MICROTROCHUS, H. Al'PLANATA, Moll. China. 



H. SQUAMULIFERA, Moll. In*. Bongao, near Borneo. 



H. OSBEOKII, Phil. Loo Choo Is. 



H. REPANDA, Pfr. Cambodia. 



H. CASEUS, Pfr. Siatn. 



H. PILISPARSA, Martens. Celebes. 



Section II. AE(;ISTA, 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. 



