m f^ m m m 



Fig. 1, 2. Corbicala orthotlonta Pilsbry. | 



Fig. 3, 4. C. nipponensis Pilshry. f^ |Fl 

 ,, 5, 6. C. leana Prime. ^ ^ 



„ 7, 8, y, 10. C. viola Pihbnj. 





„ 11, 12. C. nipponensis delicata Pilshrij. J^JH 



„ IH, 14. C. awajiensis Pilsl/nj. f^ |f=§ 



„ 15, 16. C. Sadoensis Pilshry. f^ -^ 



„ 17, 18. C. Sandai Reinchardt. M. ^ 'M 



n 



