FiG. 1-2 PiREXA Lamarei nov. sp 



>> 3-4 Melania Labuanensis nov. sp 



— chrysalis nov. sp. 



— lierbacea nov. sp. 



— subspinulosa nov. sp 



— angulifera nov. sp 



— ciliata nov. sp. 

 Melania turris nov. sp. 



— lepida nov. sp. 



— Zeleboriî nov. sp 



5 



6 



7-8 



9 

 10 

 11 

 12 , 

 13-14 

 15 

 16 



Chenui nov. sp. 

 radix nov. sp. 



