CHARACTERS OF THE LEMURS AND TARSIUS. 



45 



a smaller, sometimes incipiently bilobed distal expansion. As 

 compared with the size of the animals, the baculum in the 

 species referred to Lemur is smaller than in any other genus 

 (text-fig. 14, H). 



In Galayo senegalensis the penis is long (text-fig. 13, D, E). 

 Its narrow and cylindrical, proximal portion gradually expands 

 distally to a considerable extent, and. its terminal portion is 

 attenuated. The orifice of the urethra, opening beneath and 

 behind the hardened rounded pad covering the tip of the baculum, 

 is provided with a small inferior and two small lateral labia. 

 Except at the distal and proximal ends the epithelium of the 

 penis is thickly beset with comparatively coarse reversed spines 



Text- figure 14. 



A. Baculum of Clnrogaleus major from the side, the line indicating: the course of 



the urethra. 



B. The same from above showing the apical bifurcation. 



C. Baculum of Indris from above (copied from Milne- Edwards). 

 I). The same of Gal ago senegalensis from the side. 



E. The same of Galago crassicaudatus. 



F. The same of Nycticebus. 



G. The same of Perodicticus. 



H. The same of Lemur albifrons. 

 I. The same of Chiromys. 



(All the figures twice nat. size.) 



approximately equal in size. The baculum (text-fig. 14, D) is 

 long and slender, being actually nearly twice as long as that of 

 an adult male Lemur albifrons. It is practically straight and 

 gradually attenuated from its broad base, but there is a slight 

 sinuosity in its distal third and a slight and gradual thickening 

 at the apex which is blunt. 



