NO. 5 INTERMEDIATE HOSTS OF ASIATIC BLOOD FLUKE BARTSCII 5 1 



No. of 

 whorls 



5-4 

 54 

 47 

 5-9 

 4.8 

 5-3 

 6.3 

 4-5 

 4-4 

 5-0 

 4.2 

 5-5 

 5-1 

 5-3 

 5-3 



Greatest ' '/■'2. 



Least " 4-2 



Average " 5-76 



•' For the 40 specimens. 



Height Diameter 



in mm in mm 



U.S.N.M. no. 426225 contains 39 specimens collected by Dr 

 Mary N. Andrews at Chinking, Kiangsu Province, China, which is 

 the type locality of Oncomelania lutcola Heude, which I consider 

 synonymous with Oncomelania schmackeri, 10 of which give the 

 following rib count and 20 the additional measurements : 



Ribs per 



Greatest 15 



Least II 



Average 12.2 



