﻿E. LÖNNBERG, ON THE CLAWLESS OTTER OF CENTRAL AFRICA. 5 



in the true L. capensis, the least thickness being in the 

 former 1 mm., in the latter fully 2 mm., and in addition to 

 this the outer and inner edges are thickened in the latter. 

 In the true Lutra capensis the sagittal crest is quite well 

 developed and the lambdoid crest is very strong. In L. c. 

 hindei there is hardly any sagittal crest and the lambdoid 



Fig. 1 a. 



Fig, 1 h. 



Fig. L Occipital region of skull a. of Lutra capensis hindei fronii 

 Rhodesia, h. of Lutra capensis from Natal. 



crest is much weaker than in the southern race. These dif- 

 ferences in the development of crests and processes give quite 

 a different shape to the whole posterior region of the skulls 

 of the two races which in reality is greater than the photo- 

 graphical reproductipns can show (fig. \a k h). 



