500 PROCEEDINGS OF THE ACADEMV OF [DeC, 



Isabella-tinted, thick, well expanded and slightly refllexed; the parietal 

 viargin cut into one or several rounded tubercles, the peristome elsewhere 

 smooth. Superior lamella marginal, suhvertical, thick at its end, 

 thin within and continuous with the spiral lamella, which penetrates 

 past the aperture to the left side. Inferior lamella thick but not in 

 the least doubled, forming a prominent fold in the mouth, very strongly 

 spiral within, becoming horizontal and very strong a half whorl inward, 

 then abruptly diminishing, penetrating as far as the spiral lamella. 

 Suhcolumellar lamella emerging to the lip-edge, penetrating inward as 

 far as the other lamella^. Principal plica not long, latero-ventral. No 

 upper palatal plica. Lower palatal plica long, oblique and arcuate, a 

 N'ery oblique, long lunella rising from it near the middle, and curved 

 inwards somewhat at the upper end. 



Ijength 26, diam. 6, length of aperture 6.2 nun. 



The clausilium (PL XXXII, figs. 3, 4) is well curved, the columellar 

 margin straight, strengthened by a rib which terminates in a straight 

 finger-like apical process; palatal margin arcuate. 



Ogimi, prov. Kunchan, Ryukyu (Okinawa). Types No. 89,890 

 A. N. S. P., from No. 1,347 of Mr. Hirase's collection. 



This is more coarsely sculptured than any other known Luchuphce- 

 dusa, and is further distinguished by the very long lunella, as in C. 

 lokunoshimana, and the absence of an upper palatal plica, present in 

 the other species. The clausilium has most resemblance to that of 

 C. mi ma. 



In quite mature individuals the sculpture is largely worn from the 

 ventral face of the shell, as shown in the figure. 

 Clausilia koniyaensis n. sp. PI. XXXII, figs. 5-S. 



Shell fusiform, the pciuiltimate whorl widest, pale straw-yellow, glossy, 

 •closely and evenly striate, the striir usually a little more si)aced on the 

 back of the last whorl. Whorls 9^, slightly convex, the last com- 

 pressed laterally, convex below. Aperture small, piriform, the 

 peristome white, refiexed and somewhat tliickened, the parietal margin 

 weakly, irregularly crenulated. Superior lamella marginal, con- 

 tinuous with the spiral lamella, which penetrates past the ventral to 

 the left side. Inferior lamella more or less distinctly double, forming 

 two contiguous columellar folds; as long inside as the spiral lamella. 

 Subcolumellar lamella emerging to the lip-edge, but rather weak; as 

 long inside as the other lamella\ Principal plica lateral, about a lialf 

 whorl long. Upper palatal jjlica rather short and very oblique. 

 Lower palatal plica long, strong and arcuate, a rather long, oblique 

 lunella rising from it in the middle. 



