360 PROCEEDINGS OF THE ACADEMY OF [May, 



ADDITIONS TO THE JAPANESE LAND SNAIL FAUNA.-VI. 

 BY HENRY A. PILSBRY. 



The present coninmnication consists chiefly of detailed descrip- 

 tions of species briefly defined in footnotes to my Catalogue of the 

 Claimliidce of the Japanese Empire,^ although a number of new 

 sj^ecies, not enumerated therein, are now defined. The discovery 

 of all of these forms we owe to the continued exertions of Mr. Y. 

 Hirase, of Kyoto, Japan. 



Section MEGALOPH^DUSA Boettger. 



Clausilia mitsukurii Pilsbry. 



Pilsbry, these Proceedings for 1901, p. 648, footnote No. 2 (March 

 1, 1902). 



Shell rimate, fusiform, short and obtuse at the ends, somewhat 

 5u7miwM«-shaped ; purplish-brown under a thin cuticle, which has 

 been almost entirely lost in the type specimens. Surface dull, 

 finely striate, everj'where extensively eroded by the joint action of 

 free carbonic acid and mechanical wear. Spire tapering to the 

 very obtuse apex. Whorls 8^ to 8|^, slightly convex, the latter half 

 of the last whorl compressed, tapering. Aperture but slightly 

 oblique, fleshy-brown within, oval or ovate. Peristome reflexed, 

 flesh-colored, the upper margin adnate for a short distance. Supe- 

 rior lamella oblique, not reaching the margin, continuous within 

 with the spiral lamella, which extends to a latere- ventral posi- 

 tion. Inferior lamella retreating, distinctly truncate at its base, 

 giving off a branch toward the superior lamella, strong, but 

 slightly curved and obliquely ascending within, penetrating deeper 

 than the superior lamella, to the ventral side. Subcolumellar 

 lamella barely emerging. Principal plica short, latero-dorsal. 



'In all cases the descriptions have been drawn from the original 

 specimens defined in the footnotes of that catalogue, though in some 

 cases additional material has also been studied in connection with the 

 types. 



