744 PROCEEDINGS OF THE ACADEMY OF [Oct., 



middle region of the base being smooth and glossy. Spire straightly conic, 

 the apex obtuse. Whorls 5^, very convex, parted by a deep suture. 

 Last ivhorl almost rounded at the periphery, there being the sHghtest 

 indication of an obtuse angle; convex beneath, narrowly and rather 

 deeply impressed around the perforation. Aperture semilunar, the 

 columellar margin sub vertical, suddenly dilated above. 



Alt. 2.9, diam. 3.1 mm. 



Hotawa, Taiwan. Types No. 89,882 A. N. S. Phila., from No. 1,418 

 of Mr. Hirase's collection. 



The convex whorls, rounded periphery and silken surface with a 

 smooth^basal area, are the more prominent features of this little snail. 

 Kaliella longa n. sp. 



The shell is imperforate, cupola-shaped, much elevated, the diameter 

 only two-thirds the height, amber-colored, subtransparent and very 

 thin. Surface glossy. The very high spire has convex outlines and a 

 very obtuse apex. WTiorls 7h, the earlier ones quite convex, the later 

 whorls less so ; last whorl with a delicate, acute, thread-like peripheral 

 keel, the base convex, impressed around the axis. Aperture semi- 

 circular, small, the columellar margin reflexed above. 



Alt, 3, diam. 2 mm. 



Hotawa. Taiwan. Types No. 89,876 A. N. S. Phila., from No. 1,415 

 of Mr. Hirase's collection. 



Compared with K. prcealta and its varieties izushichitoensis and xen- 

 ica this species has more convex sides and a more obtuse apex. It is 

 nearer in shape to K. elongata Godwin-Austen {Land and Fresh-water 

 Mollusca of India, p. 9, pi. 2, fig. 9), but that has more whorls, a more 

 acute apex and is larger, being 5 mm. high, 3.3 wide. 

 Sitala troohulus formosana Schm. and Bttg. 

 Nachrbl. d. m. Ges., 1891, p. 153. 



Tamsui (Boening). S. trochulus Mlldff. is a Chinese species, of which 

 Schmacker and Boettger consider the Formosan snail a variety. 



Sitala hirasei Pilsbry, n. sp. 



Shell imperforate, acutely carinate, conic above, convex below the 

 carina, excessively thin, fragile, amber-colored, somewhat transparent. 

 Surface somewhat shining, roughened with rather coarse but low 

 oblique ripples or wrinkles in places, and showing extremely fine spiral 

 stride ; on the apical two whorls these striae are delicate raised threads ; 

 on the later whorls and base they appear as lines of minute, close, reg- 

 ular punctures. Immediately around the axis the puncture lines give 

 way to fine smooth spiral striae. Spire straightly conic; whorls 4^, 



