EXPLANATION OF PLATE XVII. 



Outline drawings illustrating the sculpture of the shells of the Shan 

 species of Taia. The line between the two views of each shell 

 shows the actual length. 



Taia lacustris, sp. nov. 

 Fig. 1. — Type-specimen from lacustrine deposit on the He-Ho plain. 



Taia cylindrica, sp. nov. 

 Fig. 2. — Type-specimen from Hsin-Dawng cave deposits. 



Taia analoga, sp. nov. 

 Figs. 3, 4. — Shells from peaty deposits on the He-Ho plain. 



Taia elitoralis, sp. nov. 



Figs. 5, 6. — Male and female shell from the Intermediate Zone of the 

 Inle Lake. 



Taia intha, sp. nov. 



Fig. 7. — Typical shell from the middle of the Inle Lake. 



Taia conica, sp. nov. 

 Fig. 8. — Type-specimen from Hsin-Dawng cave deposits. 



