1901.] NATURAL SCIENCES OF PHILADELPHIA. 635 



distal end very oblique and thickened on the coluraellar side, the 

 proximal end emarginate on the columellar side of the filament. 

 The middle of the palatal margin projecls. 



Kagoshima, Satsuma, in southern Kiushiu. Types No. 81,925 

 Coll. A. N. S. P., from Mr. Y. Hirase's No. 695. 



Similar to C. tanegashimce and C. ptyckocyma in the strong crest 

 behind the outer lip, but different from both in palatal armature. 

 No other Japanese species has any similar structure of the last 

 whorl. 

 Clansilia tanegashimse Pilsbry. PI. XXXVII, figs. 32, 33, 34. 



Pilsbry, these Proceedings for 1901, Vol. LIII, p. 500 (October 2). 

 Shell fusiform, rather acutely tapering above, very solid, some- 

 what glossy, brown, very weakly striate except the last whorl. 

 Whorls about 10J, moderately convex, the last having a strong, 

 acute ridge or crest a short distance behind the outer and basal 

 lips. Apertureovate-piriform, the sinulus a trifle retracted ; peris- 

 tome reflexed, somewhat thickened, very shortly free or almost 

 adnate above. Superior lamella small, vertical, marginal, widely 

 separated from the spiral lamella, the latter extending inward past 

 the ventral side. Inferior lamella emerging in a slender cord 

 parallel to the subcolumellar lamella, otherwise very deeply reced- 

 ing, within very strong and obliquely ascending, penetrating as far 

 as the spiral lamella. Subcolumellar lamella emerging to the lip- 

 edge, bounded by grooves. Principal plica about a half-whorl 

 long, extending from a dorsal position (visible within the throat) 

 to just past the lunella. Lunella well developed, subventral, some- 

 what curved inward above, connected below with the inner end of 

 a long oblique lower palatal plica. 



Length 18.5, diam. 4.2 mm. 



Length 16, diam. 4 mm. 



Length 16.2, diam. 3.7 mm. 



The clausilium (PI. XXXVII, figs. 39, 40) is similar to that of 

 C. bilabrata, being oblique and thickened at the apex, and excised 

 on the columellar side of the filament. 



Tane-ga-shima, Osumi, Northeastern Group of the Riukiu Islands. 



Types No. 81,933 CoTl. A. N. S. P., from No. 662 of Mr. 

 Hirase's collection. Also occurs on Yakushima, No. 6626 of Mr. 

 Hirase's collection. 



This is a much larger species than C. ptychocyma, with emerging 



