1901.] NATURAL SCIENCES OF PHILADELPHIA. 



as far as the spiral lamella. Subcoluraellar lamella emerging to 

 the lip-edge, several folds usually grouped around it. Principal 

 plica strong, reaching from the dorsal to the ventral side. 

 Lunella lateral, strong, slightly curving inward above, united 

 below to the lower palatal fold near its inner end. 



Length 14.7, diam. 3.5 mm. 



Length 12, diam. 3 mm. 



Fukuregi, Province Higo, Kiushiu. Types No. 81,930 Coll. 

 A. N. S. P., from No. 674 of Mr. Hirase's collection. 



Related to C. bilabrata Smith, but only about half as large, 

 with fewer whorls, not subject to truncation, and more attenuated 

 above. The lunella is more lateral. In C. surugensis the spire 

 is much less slender. Named in honor of Dr. Oscar Boettger. 

 Clausilia surugensis n. sp. PI. XXXVI, figs. 25, 26, 27. 



Shell rimate, obese below, attenuated above, whitish under a pale 

 brownish-yellow cuticle, which is mainly eroded from the specimens 

 examined; finely striate. Whorls 10, the first rather large, next 

 three or four scarcely increasing in diameter, the last two or three 

 whorls quite swollen. Aperture piriform with rather distinct 

 sinulus, peristome narrowly reflexed and thickened, varying from 

 nearly smooth to densely plicate along the eolumellar margin; 

 notched to the left of the superior lamella. Superior lamella rather 

 small, a more or less distinct groove on each side of it, and a very 

 small fold or lamella close to it on the left; not continuous with the 

 spiral lamella, the latter continued inward past the ventral side. 

 Inferior lamella very deeply receding, strongly spiral \vithin, con- 

 tinuing inward as far as the spiral lamella. Subcolumellar lamella 

 emerging. Principal plica a half whorl long, extending from a 

 dorsal to a ventral position. The lunella is sub ventral, curves in- 

 ward above, and is weakly united with, or slightly separated from, 

 the middle of a rather long, oblique, lower palatal plica. 



Length 15, diam. 3.7 mm. 



Length 14.3, diam. 3.8 mm. 



Clausilium (PI. XXXVI, figs. 28, 29) oblique and somewha 

 thickened at the apex, a little excised or emarginate on the eolu- 

 mellar side of the filament. 



Mikuriya, Suruga. Types No. 81,902 Coll. A. N. S. P., from 

 Mr. Hirase's No. 688. 



This species is much smaller than C. bilabrata, which is not 



