Xll 



Distribution. 



The discussion of distribution is deferred until the conclu- 

 sion of the monograph. The genera of Gastrocoptinse range 

 as follows : 



Palaearctic Region: Gastrocopta, Odontocyclas, Sandahlia, 

 Abida, Granopupa, Chondrina. 



Ethiopic Region : Gastrocopta, Fauxulus. 



Oriental Eegion : Gastrocopta, Hypselostoma, Boysidia, Gy- 

 liauchen, Aulacospira and Systenostoma. 



Australian Region : Gastrocopta. 



Nearctic Region : Gastrocopta, Chaenaxis. 



Neotropic Region : Gastrocopta, Bothriopupa, Gibbulina. 



Gastrocopta is thus the only genus found on all the conti- 

 nents. All the others are confined to single faunal Regions. 



