108 EINAR LÖNNBERG, MAMMALS COLLECTED IN CENTRAL AFRICA. 



similar to cd. In the lower jaw the median pair of incisors, are distinctly bilobed, any 

 second pair is not visible, but id 3 are long and slender, althougli somewhat shorter 

 than de. The four pairs of milkmolars in both jaws are in the act of cutting the gum, 

 but the foremost pair is very small, in the upper jaw quite rudimentary. 



Palatal folds of Potamochcerus : 



As the skull of the young P. intermedius arrhenii had been dried with some of the 

 soft parts adherent, and the soft palatal parts were preserved in such a state that the ar- 

 rangement of the palatal folds could be very plainly seen, I have let prepare the accom- 

 panying sketch of the same (f ig. 11). The palatal folds of the domestic Pig have been well 

 described and beautif ully f igured by G. Retztus, 1 and the present author has given a short 

 note about the same of a young pig of Phacochoerus. 2 In both the animals mentioned 

 the number of folds, or pairs of folds, is about 23. In this Potamochcerus there are 22 

 folds on each side, but due to some irregularity the real pairs can only be regarded to be 

 20 in number. In the domestic Pig all folds are nearly transverse, although the 6 poste- 

 rior ones behind the level of p* are lower and more irregular. In the Warthog the anterior 

 folds are curved forward, the middle ones obliquely arranged, and the three last only 

 formed by a series of papillae. In Potamochozrus as in the Warthog three different sets 

 can be discerned. The 10 anterior pairs (instead of 17 in the domestic Pig) are (almost) 

 transverse (except the foremost which are oblique), and this condition prevails about to 

 the level of p 2 . Then follows about 7 pairs which are obliquely arranged with thelateral 

 ends behind the level of the mesial ends. The three hindmost pairs again are transverse 

 but short. On the whole this arrangement is thus more similar to that of Phacochoerus 

 than to that af Sus. 



Manis tetradactyla Lin. 

 1 specimen from Beni, Jan. 1914. 



Manis tricuspis Rafinesque. 

 A mutilated native skin with no locality. 



1 Biolog. Untersuch., N. F. XIII, Stockholm 1906, p. 133 & 134, Taf. XXXVII, fig. 3—5. 



2 K. Vet. Åkad. Handl., Bd. 49, Stockholm 1912. N:o 7, p. 23. 



