368 The Molluscan Family Planorbidae 



PLATE 66 



Radiilae of Indoplanorbis and Planorbarius 



See remarks on plate 53. Line at lower right of plate 

 indicates 25 microns in length. 



1. Indoplanorbis exustus (Deshayes). North Shan State, Burma. 



60, center tooth; 1-5, lateral teeth; 6-10, intermediate teeth; 16-21, marginal 

 teeth; 11, last intermediate tooth in another row; 12-15, marginal teeth in 

 same row; 23-26, marginal teeth in same row; 27, 32, 33, outer marginal teeth 

 in same row. 



2. Planorbarius corneus (Linn.). Near Warsaw, Poland. 



60, center tooth; 1-9, lateral teeth; 10-14, intermediate teeth; 15-38, marginal 

 teeth; 39-42, outer marginal teeth. 



