Allen — The West African Fored Fig. 51 



row, 93; ui^per mular row from in front of p?7J^, 80(97) ; lower molar row, 

 '89; lower molar row from in front of pm-i, 81 (99); last upper molar, 32.5 

 X 17 (42.3 X 17.5); penultimate upper molar, 19 x 14.5; last lower molar, 

 37 X 16 (48.2 X 16); penultimate lower molar, 21.5 x 12; lower dias- 

 tema between premolars and canine, 51 ; between lower canine and inci- 

 sor, 14. 



The persistence of the milk pm* in the upper jaw was noted by Thomas 

 in his specimen, and a similar condition is found in ours. In front of it 

 are pni', p7)r\ while wedged between them on both sides of tlie jaw is a 

 minute splint evidently representing a persistent root of milk jmv^. 



In the INIusee du Congo at Bruxelles are skins and skulls of a young 

 female, a semi-adult, and an adult male Forest Pig from the Ituri Forest of 

 Central Africa, which have been made the subject of an elaborate mono- 

 graph by .Matschie.* lie figures the exterior and skulls of these specimens 

 and considers that they represent a species distinct from the two before 

 described, which he therefore names Hylorhoerus itnru'tisis. It is appa- 

 rently identical iu color with H. rimntor and //. meinertzltageni , but accord- 

 ing to the describer, its skull shows certain peculiarities, chief of which are 

 the following: ( 1 ) the salient crest from foranieu magnum to vertex is 

 much less marked than in the latter; (2) the zygomata are less bowed; 

 (3) the nuchal plane at the i)Osterior end of the skull is deeper; (4) the 

 occiput is not directed backward so much as iu meinertzlingeni; (5) the 

 canines are less curved at the ti)) and more pointed; ((>) the angle made 

 by the frontals witli the nasals is sliglitly less; (8) the height of the lower 

 jaw at the diastema is less than the least widtli of tin,' palate, instead of 

 being at least as great as is the case in the East African species. 



Professor Matschie believes that the Ituri Pig can not be H. rhnator 

 because of the dimensions of the last upperand lower molars, which in two 

 adults are respectively 39.6 and 40.3 x 19; and 42.5 and 43.5 x 16. Thomas 

 gives for the type of rimator 42.3 x 17.5 and 48.2 x 1 7 for these dimensions, 

 a difference not very great. The Ituri Pig's upper molar row measures in 

 two adults, 90, 91.5; the lower molar row, 83.3, 90.5; those of our speci- 

 men are, 93 and 89 respectively. ^Matschie further states that in rhnator 

 and meinertzhageul the tubercles of 7h'' forming the anterior angles of the 

 two middle triangles do not touch, whereas in ituriensis they are in con- 

 tact. In our specimen of rimator the.se tubercles are, however, in close 

 contact. Ai>parently ituriensis is more nearly allied to rimator in size 

 and cranial characters thau to rneincrlzliageni and it uiay be questioned 

 whether the characters claimed for it are really sufficient to warrant its 

 recognition. At least it can be hardly more than subsiiecitically distinct. 



That the terra " Ciiant Pig" api)lied to the.se animals is a misnomer is 

 now well recognized, for they are in reality not remarkably large, though 

 standing fairly big] 1. Plujtographs of living specimens of the Fast African 

 melnertzhageni have recently ajipeared in the " Proceedings of the Zoolog- 

 ical Society of London," 1908, part 1, p. 203, and in " Collier's Weekly," 

 1909 (article by A. R. Dugmore). 



•Matschie, P. Ann. Miis. du Congo, Hruxellcs, 1906, Zool. scr. 5, p. 2:!, pis.,'), Ito. 



