238 



THE GEOGRAPHY OF MAMMALS 



Summary and Deductions (continued). 



Deductions 



1. About forty-eight species of the Order Lernures, 

 belonging to seventeen genera and three families, are 

 known. 



2. Of these thirty-six species, representing twelve genera, 

 are restricted to the Malagasy Sub-region, which must be 

 regarded as the special home of the Lemurine Mammals. 



3. The remaining forms of Lemurs are thinly spread 

 over the Ethiopian and Oriental Kegions, Lemurs being 

 altogether absent in the Palsearctic, Australian, Nearctic, 

 and Neotropical Regions. 



4. The Aye-aye (Chiromys), forming a family of itself, 

 is restricted to Madagascar. 



