122 Bulletin ii 122 



Explanation of Plate 9. 

 (9) 



Page. 



Fig. I , Aporrhais gracilis Aid 69, 69 



2a. Calyptraphorus trinodiferus Con 70, 70 



3a, b. Melania trigetnmata Q.on 71, 71 



4. Potmnides ftdvarupis, n. sp 71, 71 



5. Cerithiuvi delicatulum K\A. (after Aid.) 72, 7a 



6. Cerithium f tovtbigbeensis Aid 72 , 72 



7. Cerithiopsis fluviatilis Aid. (after Aid. ) 72 , 72 



8. Cerithiopsis conica Aid 73, 73 



9. Cerithiopsis terebropsis, n. sp 73 , 73 



10. Melania sylvarupis, n. sp 70, 70 



