10 ARKIV FÖR ZOOLOGI. BAND 7. NIO 0. 



and feet. The snout of this specimen is dark but not as 

 black as the forehead. 



A young male from Cameroons lias the forehead not 

 sharply set of black as in the old, but it is only mixed with 

 black. The animal is otherwise red all över but recognized 

 by its white dorsal streak and white margin to the ears. — 

 A still younger specimen is similar. 



A mounted, not fully adult, female specimen of River-Hog 

 from Liberia in the Zool. Museum of Leiden is rufous all 

 över. The snout is dark but the forehead is only sprinkled 

 with black and the feet are only black on the front-side. 

 Below the eye is a vvhitish stripe and below the same a 

 broad blackish band bordered below by the whitish whisker- 

 stripe. This specimen agrees thus nearly with the specimens 

 from Cameroons but as it is a female it is not safe to say 

 whether the differences are constant or not. 



It is possible that there is a difference in colour between 

 P. porcus and P. p. pictus as Schinz says in his description 

 of the type of »penicillatus» : »regione interoculari alba», while 

 Gray only mentions a streak över and under the eye as 

 being w^hite. This may, however, be variable. 



If there is some doubt about the validity of Gray's 

 P. p. pictus there certainly can be none about another very 

 well marked geographic subspecies of Potamochoerus porcus 

 the type of which has been collected at Ubangui, Northern 

 Congo by the Alexander Gosling Expedition. It is repre- 

 sented in the British Museum Na t. Hist. by the skull of an 

 adult boar (7. 7. 8. 258) and the head skin to the same. I 

 take the pleasure in naming this animal : Potamochoerus por- 

 ens ubaiigeiisis n. The dimension of the skull mentioned are 

 to be found on the table of measurements (I) and from these 

 it is apparent that the River Hog from the Ubangui-region 

 is a smaller animal in most respects than its more western 

 allies. Especially striking is the, as well absolute as relative, 

 narrowness of its parietal area, 26 mm., which only amounts 

 to 8,0 Vo of the upper mesial length of the skull. This 

 characteristic alone, together with the smallness of the skull, 

 suffices to distinguish P. p. uhangensis from other members 

 of the P. porcus group hitherto described. 



That the specimen really belongs to this group is clearly 

 proved by the skin which is covered with short hair, not 



