Pteropidae.** 



Rhinolophidae. Piiyllorhinin^: 



Nycteridae. 



[To face y. 350. 



GlossophagtB. 



Vampyri. 



PiiYLLosTOMiNiE. | Phyllostomidae.t 



Stenodermata. 



Desinodontes. 



Vespertilionidae 



Molossi. Emballonuridae. 



Diagram illustrating the affinities of the families and genera of Chiroptera, and 

 probable lines of descent from ancestral forms (Palesochiroptera). 



The families are indicated by circles, the subfamilies by semicircles, and the rela- 

 tive position of both indicates their affinity. 



In the same manner, the affinity of the generic groups to each other, and to 

 groups of other families, is indicated (as far as possible) by the relative position of 

 the names of these groups in each circle. The generio names (in Koman letters) 

 are introduced in order to indicate the position of the transitional forms referred 

 to in the text. 



* Limited to the Eastern Hemisphere. 

 t Limited to America. 

 ** Limited to the Eastern Hemisphere and Polynesia. 



Families, groups, and genera not distinguished by a mark, as above, are found in 

 both hemispheres. 



The position of the circle representing the Pteropidce is not intended (as in other 

 cases) to indicate their descent from the Phyllostomida, but to show their position 

 with regard to the whole suborder Microchiroptera. 



Palaeochiroptera. 



