﻿ARKIV FÖR ZOOLOGI. BAND 4. NIO 12. 



The accompanying figures prove that the cranial differences 

 are not only due to differences in dimensions but to discrepan- 

 cies in structure as well. The pterygoid processes, for instance,. 

 have different shape as well as direction in the two subspecies- 

 (conf. the plate). In L. c. Jiindei they are almost parallel,. 

 nearly vertical and narrowing towards the posterior tip which 

 is ben t to the side and only 2 mm. broad. In L. capensis- 

 again the same processes diverge backwards; their free margin 

 is more deflected laterally than in the other and their pos- 

 terior end is broad, about 57^ — 6 mm. The mastoid processes 

 are flatter and shorter in L. c. Jiindei than in the triie L. capen- 

 sis in which they are ex ceedingly stout, their anteroposterior 

 diameter on a level with the free margin of meatus auditorius 

 externus being about 10 mm. while the same measurement in 

 the former is about 7 mm. The length of the same processus 

 from the meatus auditorius may be estimated to about 10 mm. 

 in the former, 15 mm. in the latter, but measured on the 

 outer side the length of the same processus may be put to 

 8 mm. in the former and 14,5 mm. in the latter. The direction 

 of the mastoid processus is in the former more forward and 

 outward, in the latter the direction is more downward as is 

 plainly seen in the accompanying figures (fig. 1). The paroccipi- 

 tal processes of L. c. hindei are much smaller and thinner than 



