THE CONCHOLOGICAL MAGAZINE. 11 



the spiral lamella, which is rather high and extends inward to a 

 point above the sinulus. The inferior lamella is very low and in- 

 conspicuous from in front, being formed as in C. tan. Tfre sub- 

 columellar lamella usually emerges to the lip-edge, but iri some 

 individuals it hardly emerges. The principal plica is onerthird of 

 a whorl long, dorso-lateral. The upper palatal plica is orie-third 

 to one-half the length of the principal plica. The lower palatal 

 plica is a short, slightly oblique, strong nodule. Therd is no 

 lunella, though the wall may be paler in its position. 



Length 18.8, diam. 3.5 mm.; whorls 12. 

 " 16.3, " 3.2 " " n#. 



14.5, " 3 " " II. 



The clausilium is very strongly curved, almost forming a half 

 circle, being therefore a little more curved than in C. tan. The 

 lower part of the palatal border is somewhat less widely recurved 

 than in C. tan. 



Corea: Fusan. Cotypes no. 94732 A. N. S. P., and no. 1461 

 of Hirase's collection. 



This species is closely related to C. tan of Japan, also found in 

 China, from which it differs by the usually larger size and greater 

 number of whorls in shells of equal length, the disconnected superior 

 and spiral lamellae, the usually emerging subcolumellar lamella, 

 and the absence of a lunella. It may not unlikely be what A. 

 Adams reported as C. aculus from Fusan. 



Ena coreana n. sp. (figs. 4, 5, 6.) 



The shell is deeply rimate.cylindric-tapering, very thiri, brown- 

 ish corneous, slightly transparent, glossy, weakly, irregularly 

 striate, and usually showing faint traces of fine spiral lines on 

 the last whorl. Spire slowly tapering, with convex outlines, 

 whorls 7 to %]/2, convex, the suture deeply impressed. Last 

 whorl full and convex at base. Aperture slightly oblique, ovate, 

 Peristome thin, white, well expanded, but hardly reflexed. Co- 

 lumella concave, not thickened; columellar margin dilated, thin. 

 Parietal callus very thin, transparent or whitish. 



Length 14, diam. above aperture 4, length of aperture 4 mm. 



12.2, 4, " " 4 " 



10, " " " 4, " •' 3.5 " 



