1905.] NATURAL SCIENCES OF PHILADELPHIA. 739 



Clausilia (Formosana) formosensis H. Ad. 



P. Z. S., 1866, p. 317, pi. 33, fig. 7.— -Mlldff.. Jahrb., X, 1883, p. 253. 



S. and B., Nachrbl., 1891, p. 169 (new diagnosis). 



Takao (Swinhoe, v. Fries); Bankimtsong (Schmacker); Arikwan, 

 Hotawa and Sammaipo (Hirase). 



Clausilia (Heterozaptyx) uraniscoptyx Schm. and Bttg. 



C. (Hemiph(cdusa) uraniscoptyx S. and B., Naclirbl., 1S91, p. 177, pi. 2, 

 fig. 6. 



Bankimtsong (Schmacker). 

 Clausilia (Heterozaptyx) diacoptyx Pils. 



Sammaipo (Hirase). 

 Clausilia (Thaumatoptyx) bivincta Pils. 



Hotawa (Hirase). 



ZONITID^. 

 Ariophanta taiwanica Mlldff. 



Jahrb. d. malak. Ges., XII, 1885, p. 387, pi. 10, fig. 16. 

 Takao (Fries). A sinistral acutely carinate form of large size, diam. 

 28, alt. 15.5 mm. 



Trochomorpha shermani (Pfr.). 



Helix shermani Pfr., P. Z. S., 1865, p. 828, pi. 46, fig. 5. 

 Formosa (Swinhoe). A rather solid, opaque, uniform dark brown 

 shell with very minutely decussate surface. The exact locality in For- 

 mosa of several specimens in collection A. N. S. Phila. is not recorded. 



Trochomorpha haenseli Schm. and Bttg. 



Nachrbl., d. m. Ges., 1891, p. 152, pi. 1, fig. 5. 



South Cape, Bankimtsong and Bagsa (Schmacker). 

 Trochomorpha pellucida n. sp. 



Shell umbilicate, the diameter of umbilicus contained about four 

 and one-half times in that of the shell, conic-depressed, acutely cari- 

 nate, thin, pale brownish-corneous, quite translucent. Surface glossy, 

 finely striatulate with some very indistinct traces of spiral lines. Spire 

 low-conic with straight sides. Whorls 6^, the earlier ones convex and 

 slowly increasing, the last two more rapidly widening, convex below the 

 suture, then concave. Last whorl concave above and below the aftute 

 peripheral keel, convex beneath, rather suddenly passing into the 

 umbilicus, but not angular around it. The aperture is somewhat 

 oblique, with thin, acute peristome; the basal margin is rather deeply 

 arched, columellar margin steep and arcuate, upper margin short and 

 nearly straight. 



^Heterozaptyx Pils., sect, nov., type Clausilia munus Pils. 



