MAMMALS FROM MOSSAMEDES. 177 



there is however constantly a larger number of molars in 

 Heliopliohius than in Georychus. 



After this deviation , revenons a nos moutons. There 

 are in v. d. Kellen's collections four specimens belonging 

 to the genus Georychus. They agree the best with Lesson's 

 description (not with the very bad figure) of G. hottentotus ; 

 later investigations based upon the study of the types may 

 make out if this species is synonymous with another spe- 

 cies. Although the four specimens before me differ very much 

 in size, they have ungrooved incisors and ^ molars without 

 folds ; the smallest one has a small white spot on the back 

 of the head, a somewhat larger specimen has a very large 

 white spot on the back of the head , a still larger speci- 

 men has the white spot of a size intermediate between the 

 two smaller specimens , meanwhile the largest specimen has 

 no trace of such a white spot on the head. So that I 

 hardly can believe that this white spot is a specific character. 



head and body, hind foot. 



Noi. Otjipahe, 15 March 1886. 127 m.m. 22 m.m. 



NO 2. Humpata, 27 July 1885. 141 » » 23 » » 



NO 3. Catumbella, 26 June 1885. 165 m.m. 24 m.m. 



N» 4. Otjipompenima, 12 Nov. 1885. 193 » » 25 » » 



There is no difference in color, the hairs are mouse-co- 

 lored, tipped with a rich goldbrown, only in the younger 

 ones the latter tinge is less developed. 



18. he pus ochropus Wagner. 



One specimen , a nearly f ullgrown male , from Humpata, 

 11 February 1885. 



Iris light-brown. 



T remember here that I described in the Notes from the 

 Leyden Museum, 1880, p. 57 , a quite different species, 

 Lepus salae , collected by the late Sala in Mossamedes. 



19. Macroscelides intufi Smith. 

 This beautiful species seems to be very rare in collec- 



r^otes from the Leyden museum. Vol. IX. 



