66 



THE LIFE OF THE MOLLUSCA 



ing to the climatic zones they approximately occupy, 

 further distinguishing between those of the Old and 

 the New World, as follows (see Map, facing) : 



Old World. New World. 



f Circumpolar \ 21. Canadian, 

 Septentrional -I and North [including Alas- 



{ Temperate J kan. 



1. 



2. Atlantidean 



3. Circa- Mediter- 



ranean 



4. Central Asian 



5. Chinese 



6. Japanese 



7. African, West 



8. African, Central 



and East 

 g. Malagassy 



10. Afro-Arabian 



11. Indian 



12. Indo-Chinese 



13. Indo-Malaysian 



14. Philippine 



15. Austro-Malay- 



sian, and Aus- 

 tralian, N. of 



Northern 

 Subtropical 



22. 

 23- 



Californian. 

 American. 



16. 



17- 



18. 

 19. 



20. 



Austro - Polyne- 

 sian 

 Polynesian 

 African, South 

 Australian, S. of 



20° S. 

 New Zealand 



Tropical 



24. Mexican. 



25. Caribbean. 



26. Columbian. 



27. Peruvian. 

 U8. Brazilian. 



Southern 

 Subtropical 



29. Chilian. 



30. Argentine. 



None 



{ 



[•31. Patagonian. 



f South 

 \ Temperate 



(No non-marine Mollusca are known from the true 



Antarctic Region.) 



