EINAR LÖNNBERG, THE GENUS POTAMOCHCERUS. 39 



are påle rufoiis with a few scattered black bristles. The chin 

 is whitish, but all other parts of the lower side and the feet 

 are black. The pelage all över is composed of long bristles 

 as in the P. chosropotarnus-gronip . This characteristic to- 

 gether with the development and mixed colour of the dorsal 

 crest remind about the eastern Bush Pigs while the pattern 

 and colour are more of the western type somewhat recalling 

 P. p. uhangensis with the white snout. The long bristles etc. 

 distinguish it, however, at once from the latter. 



As the experience proves that the pattern is very con- 

 stant in these animals, even if the same cannot be said about 

 the colour, I think, it is the correct thing to assume this 

 specimen as representing a new species to be named as above. 



Unfortunately the skull is lacking to the type specimen, 

 but it is probable that this Uganda skin belongs to the same 

 race as a skull from Ruwenzori (Brit. Mus. 6. 12. 4. 71). 

 This has belonged to an adult boar and measures 374 mm. 

 in length mesially above. The width of the parietal flat area 

 is 34 mm. or 9,o7o of the length. It is thus narrower than 

 in P. porcus but broader than in P. p. uhangensis. The lat- 

 ter has also a much shorter skull (322 mm.) than the Ru- 

 wenzori boar. The latter has a large last molar (m^) mea- 

 suring 32 mm. while the same measurement in the Ubangui 

 specimen is only 27,5. The least interorbital breadth has near- 

 ly the same absolute measurement in the Ruwenzori and 

 the Ubangui boar viz. resp. 77 and 75 mm., but as the lat- 

 ter has a smaller skull this measurement represents 23,2^0 of 

 the length of the skull in the latter but only 20,5 7o in the 

 former. 



A quite young skull from Ruwenzori is too little deve- 

 loped to throw any further light on the characteristics of 

 this race. 



The skull of an adult male Bush Pig from Kenya in the 

 British Museum (4. 11. 5. 17) has a but little narrower pa- 

 rietal area, about 31 mm. or 8,5 7o of the upper mesial length 

 of the skull, but it is otherwise rather similar to the Ru- 

 wenzori skull with regard to its dimensions. There is no 

 skin to this latter skull, and it is difficult to express any 

 opinion about its relationship to other forms, so I prefer 

 to leave this question open. 



I am fully conscious of the incompleteness of this essay 



