1905.] NATURAL SCIENCES OF PHILADELPHIA. 741 



Macrochlamys vesta (Pfr.)- 



P. Z. S., 1865, p. 828, pi. 46, fig. 9. 



Formosa (Swinhoe). 



Macrochlamys fulgens Gude. 



Proc. Malac. Soc. Lond., IV, p. 75, pi. S, figs. 24-26. 

 Hotawa and Kiirun (Hirase). Originally described from Ryukyu. 



UacrocMamys formosana Schm. and Bttg. 



Nachrbl., 1891, p. 149, pi. 1, fig. 2, with var. atypa, p. 150, 

 South Cape (Schmacker); Tapanii (Hirase). 



M. f. atypa S and B. 



Bankimtsong (Schmacker) . 

 Macrochlamys par Schm. and Bttg. 



Nachrbl. d. m. Ges., 1891, p. 150, pi. 3, fig. 3. 



Takao (Schmacker). 

 Macrochlamys nitidus n. sp. 



Shell minutely perforate, depressed, pale yellow, subtransparent, 

 gloss}^ and smooth, under a strong lens showing excessively fine spiral 

 striae below the suture and around the umbilicus; the parietal callus 

 very thin, minutely granulose. Spire very low-conic. Whorls 4|, 

 slightly convex, the last nearly twice the width of the preceding, 

 rounded at the periphery. Aperture deeply lunate, slightly oblique, 

 the peristome simple, minutely dilated at the axis. 



Alt. 3.5, diam. 5.8 mm. 



Hotawa, Taiwan. Types No. 90,236 A. N. S. Phila., from No. 1,422 

 of Mr. Hirase's collection. 



This species has much the general appearance of Zonitoides nitida, 

 but with a less impressed suture and rather narrowly lunate apertm-e. 

 A few somewhat smaller, thinner specimens, apparently not fully ma- 

 ture, were taken at Giiran. 



Microcystina spadiz Schm. and Bttg. 



Lamprocystis spadix S. and B., Nachrbl., 1891, p. 151, pi. 1, fig. 4. 

 Takao. Very distinct by its brown color. The nodule on the col- 

 umella shows it to be a Microcystina. 



M. s. oinctus Pils. 



Lamprocystis spadix S. and B., var. cinctus Pils., Proc. A. N. S. Phila., 1901, 

 p. 194. 



Formosa (Steere), exact locality unrecorded. 



Microcystina lamprohasis n. sp. 



Shell minutely perforate, low-conic above, convex below the rounded 



