2 MR. OLDFIELD THOMAS OX [Jan. 16, 



Deer illustrating the gi-owth of the antlers, which had been pre- 

 sented to the Society by Mr. Walter Winans, F.Z.S. 



Prof. E. A. Minchin, F.Z.S. , exhibited a living specimen of a 

 Lemur {Galago) which he had brought home with him from 

 Entebbe, Uganda. 



Dr. F. G. D. Drewitt, F.Z.S. , exhibited, and made remarks upon, 

 a white variety of the Common Mole. 



Mr. Oldfield Thomas, F.R.S., exhibited the skull of a female 

 Forest-Pig {ffj/locharus), which had been received from Mr. G. L. 

 Bates, who had obtained it from natives of the Ja River, Cameroons, 

 thus confirming the repoi-ts already published* as to the occurrence 

 of Hylochoirv.s on the west side of Africa. It was to be noticed, 

 however, that the Ja River was not on the West Coast watei-shed, 

 but rose some 15(J miles inland and flowed eastwards to join the 

 genei'al Congo system by way of the Nyoko and Sanga tributaiies ; 

 so that this place was the furthest westward point of the true 

 Congo basin, slightly further west in lat. 3° N. than even the 

 main mouth in 6° S. It was therefore quite likely to be the 

 western limit of the genus Hylochcerus. 



On comparing the skull of the Ja pig with those from Central 

 and East Africa ah-eady in the Museum, now numbering five of 

 difterent ages and sexes t, Mr. Thomas had come to the conclusion 

 that it could not be assigned to the same species, on account of its 

 much smaller teeth, and therefore proposed to call it Hylocluerus 

 rimatort (Thomas, Abstr. P. Z. S. No. 25, p. 1, Janr237T9b6). 

 For while the general shape of the skvdl appeared to be similar, 

 the teeth throughout wei'e veiy mai-kedly nari'ower, the difference 

 being especially noticeable in the large posterior tooth, m^ (text- 

 fig. 1, a). This tooth was not only narrower at its broadest, 

 anterior, point, but tapered posteriorly much more strongly and 

 ended in a point, wdiile in the Eastern form the tooth was liroad, 

 tapered but slightly, and had a broadly I'oiuided end. Throughout, 

 the enamel of the teeth appeared to be much less heavily coated 

 with cement, so that they had a markedly lighter and more 

 delicate appearance. In the lower jaw the same characters were 

 observable, m^ (text-fig. 1, h) being especially long and nari-ow, its 

 length more than three times its greatest breadth, while in the 

 allied forms the length was barely 2.4 times the breadth. 



There was also a certain difference in the detailed strvicture of 



* P. Z. S. 1904, ii. p. 196. 



t The Museum was indebted to Mr. C. W. Haywood for ouejoung skull and two 

 skeletons, and to Col. Harrison for a fine pair of adult skulls. 



X [The complete account of the new species described in this communication 

 appears here ; but since the name and preliminary diagnosis were published in the 

 'Abstract,' the species is distinguished bj' the name being underlined. — Editor. J 



