1905.] NATURAL SCIENCES OF PHILADELPHIA. 723 



them bearing rather long, delicate hairs. There are about ten of these 

 hair-bearing threads on the last whorl. Spire straightly conic. Whorls 

 4^, very convex. Aperture slightly oblique, subcircular, the peristome 

 simple, the ends connected by a short, very thin parietal callus. 



Alt. 5, diam. 5 mm. ; diam. aperture 2.3 mm. 



Taihoku, Taiwan. Type No. 90,240 A. N. S. Phila., from No. 1,389 

 of Mr. Hirase's collection. 



The handsome coloration and numerous spiral series of hairs are 

 the more conspicous features of this pretty Japonia, of which but two 

 specimens were taken. 

 Japonia formosana n. sp. 



Shell umbilicate, turbinate-conic, with rather slender spire, the out- 

 lines concave. Dark red -brown or rather light olive colored. Sur- 

 face but slightly shining, striatulate, with a number of low, irregularly 

 spaced spiral cords or threads, often in part indistinct, and when fresh 

 with irregularly spaced cuticular lamellae along the lines of growth. 

 There are two or three series of sparse hairs, readily deciduous, on the 

 last whorl. Whorls 5, very convex. Aperture circular, sub vertical, 

 the peristome simple, ends connected by a very short parietal callus. 



Alt. 5, diam. 5 mm. 



Hotawa, Taiwan. Types No. 90,238 A. N. S. Phila., from No. 1,407 

 of Mr. Hirase's collection. 



Only five specimens were taken. The cuticular lamellae and hairs are 

 sometimes entirely lost, perhaps always in old shells. Of the two spec- 

 imens in the type lot, they are developed on the dark red-brown speci- 

 mens which may be regarded as typical, and absent from the pale green- 

 ish one. 



Leptopoma vitreum taivanum Mlldff. 



Leptopoma taivanum Mlldff., Jahrb. d. m. Ges., X, p. 287, pi. 10, fig 4. 



S. and B., Nachrbl., 1890, p. 125. 

 L. vitreum var. lactea Kob., S. and B., Nachrbl. d. m. Ges., 1891, 190. 



Lakuli, near Takao (Fries); South Cape (Lauts); Bankimtsong and 



Bagsa (Schm acker). Also taken in Formosa by Prof. Steere, 



Cyclotus taivanus H. Ad. 



P. Z. S., 1870, p. 378, pi. 27, fig. 11. Mlldff., Jahrb. d. m. Ges., X, 1883, 



p. 283. Schm. and Bttg., Nachrbl., 1891, 192. 



Taiwan (Swinhoe); Lakuli, near Takao (von Fries); Inrin, Tapanii 

 and Ensuiko (Hirase); Bankimtsong (Schmacker). 

 Cyclotus taivanus adamsi n. subsp. 



Shell similar to C. taivanus, but uniform yellow or tawny-yellow, 

 more elevated, with the umbilicus narrower. Taihoku. 



