1901.] NATURAL SCIENCES OF PHILADELPHIA. 485 



EEFERENCE TO PLATES XXV, XXVI, XXVII, XXVIII. 



Plate XXV, Figs. 1, 2, 3. — Clausilia {Euphoidusa) Tryoni. Hachijo 

 Island. 



Fig. 4. — Clausilia {Euphcedusa) Hunfjerfordiana. Kara, Yamato. 



Fig. 5. — Clausilia (Evphwdusa) monelasmns. Kayabe, Ojima. 



Fis-s. 6, 7, 8. — Clausilia (Euphcedusa) cuholostoma. Mikuriya, Surnga. 



Figs. 9, 10. — Clausilia {lieinia) varic(jata var. nesioticu. Hachijo 

 Island. 



Figs. 11, 12. — Clausilia (Reinia) 'cariegata A. Ad. Takasaki, Kozuke. 



Plate XXVI, Figs. 13, 14, 15. — Clausilia {Hcmiphcedusa) peritjnohilis. 

 Okinoshima, Tosa. 



Figs. 16, 17, 18. — Clausilia (Hemiphcedusa) liarimensis. Kashima, 

 Harima. 



Figs. 19, 20, 21. — Clausilia {Hemiphcedusa) liarimensis. Clausilium. 

 Fig. 19, profile view from coliimellar side ; fig. 20, view of interior face, 

 tilted to show shape of the apex ; fig. 21, the same, showing posterior 

 emargination, the apical end foreshortened. 



Figs. 22, 23. — Clausilia {McgalopheEdusa) Iliraseana. Clausilium. 

 Fig. 22, showing shape of apex ; fig. 23, shape of posterior end, the apical 

 end foreshortened. 



Fig-f. 24, 25, 26. — Clausilia {Megalophcedusa) Hiraseana. Fig. 26, nat- 

 ural size. 



Plate XXVII, Figs. 27, 28, 29, 30, 31.— Clausilia (Hemiplimlusa) 

 graciUspira, green specimen. Fig. 30, showing form of the apex of the 

 clausilium ; fig. 31, the posterior emargination. 



Figs. 32, 33, 34. — Clausilia {Hemiphcedusa) gi'acilispira, reddish speci- 

 men. 



Fig. 35. — Clausilia {Tyrannophcedusa) mikado. 



Figs. 36, 37. — Clausilia {Tyrannophmdusa) iotaptyx yar. clava. 



Fig. 38. — Clausilia {Tyrannophcedusa) iotaptyx. 



Figs. 39, 40. — Clausilia {Zaptyx) hachijoensis. 



Plate XXVIII, Figs. 41, 42, 43. — Clausilia {Hemiphcedusa) micropeas. 



Figs. 44, 45, 46. — Clausilia {Hemiphoidusa) micropeas, Clausilium. 

 Fig. 44 showing shape of ape.x; ; fig. 45, profile from columellar side ; fig. 

 46, shape of posterior end, the distal end foreshortened. 



Figs. 47, 48, 49. — Clausilia {Hemiphcedusa) micropeas yar. hokkaicloensis. 



Figs. 50, 51, 53. — Clausilia {Hemiphcedusa) micropeas var. perpallida. 



Fig. 53. — Vertigo Hirasei. 



Fig. 54. — Bifidaria armigerella var. luchuana. 



