2 MR, OLDFIELD THOMAS OX [Jail. 16, 



Deer illustrating the growth 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. , exliibited a living specimen of a 

 Lemur (Galcigo) 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 {Hylochoerus), which had been received from Mr. G. L. 

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

 thus confirming therepoi-ts already j^ublished* as to the occurrence 

 of Hylochcerus on the west side of Africa. It was to be noti'ced, 

 however, that the Ja River was not on the West Coast watershed, 

 but rose some 150 miles inland and flowed eastwards to join the 

 general Congo system by way of the Nyoko and Sanga tributaries ; 

 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 Hylochoerus. 



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

 and East Africa already in the Museum, now numbering five of 

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

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

 much smaller teeth, and therefore proposed to call it Hylochcerus 

 rimaiort (Thomas, Abstr. P. Z. S. No. 25, p. 1, Janr2'37T906)^ 

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

 the teeth throughout wei-e very markedly narrower, 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, while in the Eastern form the tooth was broad, 

 tapered but slightly, and had a broadly roinided end. Throughout, 

 the enamel of the teeth appeared to be much less hea.vily 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 , b) being especially long and narrow, its 

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

 allied forms the length was barely 2| times the breadth. 



There was also a certain difterence in the detailed structure of 



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



t The Museum was indebted to Mr. C. W. Haywood for one young 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 

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

 'Abstract,' the species is distinguished by the name being underlined.— Editoe.' 



