Proc. Acad. Nat. Sci., Philada., 1893. 



Plate X. 



C I i 5 4 



A ^ 00 I { [ 



l o 0O0 



3 ^OODP° 5 



5 nroDpo 



oCli 



VI 



3— C^f 



6 

 i 



10 

 15 



25 

 X-h30 



7 — 

 9 — 



>fr?SPZ=> 



12 



I 



a ^ T7 8 9 " 12 l3 14 n 



P 7 O » AAA 



2 I C 



A A 



B X +45 



n >3 



15 



C 1 



10 15 16 17 18 20 25 40 45 46 



STERKI, RADULA OF LAND MOLLUSKS. 



