738 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Clausilia (Euphaedusa) aculus Bens. 



Taihoku (Hirase). A well-known Chinese species. 



Clausilia (Hemiphaedusa) myersi Schm. and Bttg. 

 Nachrbl., 1891, p. 172, pi. 2, fig. 4. 

 Bagsa and Takao (Dr. Myers). 

 Clausilia (Hemiphaedusa) bagsana Schm. and Bttg. 

 Nachrbl., 1S91, p. 175, pi. 2, fig. 5. 

 Bagsa (Schmacker). 



Clausilia (Hemiphaedusa) sheridani Pfr. 



P. Z. 8., 1865, p. S30, Novit. Conch., p. 284, pi. 69, figs. 13-18. Schm. 



and Bttg., Nachrbl., 1891, p. 173. 



Formosa (Swinhoe); South Cape, Takao and Kankow (Schmacker); 

 Arikwan, Sammaipo and Chikutozaki (Hirase). 



Clausilia (Hemiphaedusa) similaris H. Ad. 



P. Z. S., 1866, p. 446, pi. 38, fig. 10. S. and B., Nachrbl., 1S91, p. 170, 



with var. ventriosa. 



Formosa (Swinhoe); Takao and South Cape (Schm.). Var. ven- 

 triosa S. and B. from Kankow. 



Clausilia (Hemiphaedusa) odontochila Schm. and Bttg. 

 Nachrbl., 1891, p. 171, pi. 2, fig. 3. 



Lakuli, in southern Formosa, type loc. ; Hotawa (Hirase). 

 Clausilia odontochila nigra Pils. 



Black, with the lip-tooth obsolete; densely strisite, like C. swinhoei; 

 spire entire. Ensuiko (Hirase). 



Clausilia (Hemiphaedusa) exilis H. Ad. 



P. Z. S., 1866, p. 317, pi. 33, fig. 6. Mlldff., Jahrb., X, 1883, p. 257 (forma 



minor) . 



Tamsui (Swinhoe, Hungerford); Chosokei (Hirase). 



Clausilia (Formosana) swinhoei Pfr. 



P. Z. S., 18(55. p. 830, pi. 46, fig. 11. Mlldff., Jahrb., X, 1SS3. p. 252. 



Schm. and Bttg., Nachrbl., 1891, p. 170. 



Formosa (Swinhoe); Tamsui (Hungerford). Hotawa, Taiwan, 

 Kiirun and Suganiikei (Hirase.) 



The shells from Hotawa, Taiwan, are obese, with the strise irregularly 

 crimped, the intervals^ finely wrinkled across as in C. formosensis, but 

 the color is dark purplish-brown as in swinhoei. Those from Kiirun 

 and Suganiikei taper more and have finer nearly straight stria? without 

 interstitial sculpture, and are clearly the true C. swinhoei. 



There is a variety subformosensis Nevill mentioned by Schmacker 

 and Boettger, but I have been unable to trace the name to a description. 



