1905.] NATURAL SCIENCES OF PHILADELPHIA, 743 



Microcystina sinapidium (Reinh.)- 



Hotawa (Hirase). A common Japanese snail. 



Kaliella depressa Mlldff. 



Mlldff., Jahrb. d. m. Ges., 1883, p. 368, pi. 12, fig. 7; 1887, p. 42 (Canton and 

 Hongkong). Schm. and Bttg., Nachrbl. d. m. Ges., 1891, p. 154. 



Tamsui (Boening). 



Ealiella yaeyamensis Pils. 



Nautilu.s, XV, p. 21, June, 1901. 



Shohokumon and Daitomon, Taiwan (Hirase). This strongly stri- 

 ate Kaliella was taken in some abundance; about 30 were found at 

 Daitomon. It was described from the Ryukyu Islands. 

 Kaliella costata n. f^p. 



Shell minutely perforate, acutely carinate, the spire conic, base con- 

 vex; thin, amber-colored, translucent: upper surface sculptured with 

 strong ribs, nearly straight and slightly oblique, the glossy smooth in- 

 tervals three or four times the width of the ribs ; first two whorls smooth ; 

 base convex, smooth and glossy. Spire straightly conic ; whorls 5 j, con- 

 vex. Aperture truncate-lunate. Columella vertical, thickened, with 

 refiexed margin. 



Alt. 3, diam. 3.5 mm, 



Hotawa, Taiwan. Types No. 89,977 A. N. S. Phila., from No. 1,410 

 of Mr, Hirase's collection. 



This is the most strongly sculptured Kaliella known to us. It is 

 related to K. costulata Godwin-Austen, from the North Cachar Hills, 

 8,000 feet elevation {Land and Fresh-water Mollusca of India, p. 7, pi. 2, 

 fig. 5), but in K. costata the base is smooth, the whorls much more con- 

 vex; and while slightly larger than its Indian relative (which meas- 

 ures alt, 2.8, diam. 3.3 mm.), the Formosan shell has fewer whorls, 5^ 

 instead of 6. 



Kaliella crenulata hotawana n. subsp. 



Shell larger and more elevated than K. crenidata, with less distinct 

 sculpture, the vertical striation being weak; whorls 6+, 



Alt. 3.4, diam. 3 mm. 



Hotawa, Taiwan. Types No. 89,883 A. N. S. Phila., from No. 1,419 

 of Mr. Hirase's collection. 



Kaliella venusta n. sp. 



Shell very minutely perforate, conic with semiglobose base, thin, 

 reddish-brown. The surface has the luster of silk, produced by exces- 

 sively fine, close vertical striae, which covers the upper surface and ex- 

 tend over the periphery nearly half way to the center of the base, the 



