1901.] NATURAL SCIENCES OF PHILADELPHIA. 485 



REFERENCE TO PLATES XXV, XXVI, XXVII, XXVIII. 



PLATE XXV, Figs. 1, 2, 3. Clausilia (Euphcedusa) Tryoni. Hachijo 

 Island. 



Fig. 4. Clausilia (Euphcedusa) Hungerfordiana. Nara, Yamato. 



Fig. 5. C1mt8ilia\Juphcedu(ia) monelasmus. Kayabe, Ojima. 



Figs. 6, 7, 8. Clausilia (Euphcedusa) euholostoma. Mikuriya, Suruga. 



Figs. 9, 10. Clausilia (Reinia) variegata var. nesiotica. Hachijo 

 Island. 



Figs. 11, 12. Clausilia (Reinia} variegata A. Ad. Takasaki, Kozuke. 



PLATE XXVI, Figs. 13, 14, 15. Clausilia (Hemiphcedusa) perignolilis. 

 Okinoshima, Tosa. 



Figs. 16, 17, 18. Clausilia (Hemiphcedusa) harimensis. Kashima, 

 Harima. 



Figs. 19, 20, 21. Clausilia (Hemiphcedusa} harimensis. Clausilium. 

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

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

 emargi nation, the apical end foreshortened. 



Figs. 22, 23. Clausilia (Megalophcedusa) Hiraseana. Clausilium. 

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

 end foreshortened. 



Figs. 24, 25, 26. Clausilia (Megalophcedusa) Hiraseana. Fig. 26, nat- 

 ural size. 



PLATE XXVII, Figs. 27, 28, 29, 30, 31. Clausilia (Hemiphcedusa) 

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

 clausilium ; fig. 31, the posterior emargination. 



Figs. 32, 33, 34. Clausilia (Hemiphcedusa) gracilispira, reddish speci- 

 men. 



Fig. 35. Clausilia (Tyrannophcedusa) mikado. 



Figs. 36, 37. Clausilia (Tyrannophcedusa) iotaptyx var. 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 (Hemiphcedusa) micropeas, Clausiliam. 

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

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



Fig?. 47, 48, 49. Clausilia (Hemiphcedusa) micropeas var. hokkaidoensis. 



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



Fig. 53. Vertigo Hirasei. 



Fig. 54. Bifidaria armigerella var. lucJmana. 



