482 PROCEEDINGS OF THE ACADEMY OP [July, 



I at first identified this species with (7. ignobilis Sykes, 5 described 

 from Kinnayama, Shikoku Island, but upon requesting a com- 

 parison with the type of that species, Mr. Sykes noted several 

 important differences. The first two or three whorls in C. ignobilis 

 are much larger, not so slender and pointed as in C. perignobilis ; 

 and the lunella is bow-shaped, as in C. shikokuensis, not J-shaped. 



In* other words, the lunella in ignobilis and shikokuensis unites 

 with the lower, outer end of the upper palatal plica, curving 

 gradually and imperceptibly into it, the united plica and lunella 

 having the shape of a drawn bow, while in C. perignobilis the 

 lunella unites with the middle of the upper palatal plica, like the 

 letter J. 



In C. perignobilis the spiral and inferior lamellae are both high 

 and lamellar within, of equal length, attaining barely a ventral 

 position. The inferior lamella ascends rather straightly, and is 

 not spiral, seen from the back in a broken specimen, but is rather 

 thick. It gives off a branch toward the superior lamella, on the 

 parietal wall. 

 Clausilia perignobilis var. kochiensis nov. 



Similar to C. perignobilis Pils., from which it differs in the more 

 robust, broader contour, more widely reflexed peristome and 

 coarser striation of the latter part of the last whorl. 



Length 15.5, diam. 4 mm. 



Length 13.6, diam. 3.8 mm. 



Kochi, province of Tosa, Shikoku Island (Mr. Y. Hirase, No. 

 657ft). 



The t7-shaped lunella has the form of that of C. perignobilis. 



Section STEREOPH^DUSA Bttg. 

 Clausilia japonica var. perobscura nov. 



Similar to japonica, but of a very dark, almost blackish, brown 

 color, and sculptured with much coarser, more widely spaced rib- 

 strise. Suture with a whitish margin below. Lower palatal fold 

 very small. 



Length 25, diam. hardly 6 mm. Whorls 11. 



Shirono, Buzen (Mr. Y. Hirase;. 



It occurred with, or at least was sent with, a rather obese form 



6 Proc. Malac. Soc. Lond., I, p. 261, and these Proceedings for 1900, p. 

 682, footnote. 



