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Show 422 THE HON. WALTER ROTnSCHILD ON [Dec. 13, naturf. Fr. 1904, pp. 55-69, acknowledges seven species of the genus Simia. According to the view of the value of various animal forms which I take up, as a large proportion of these represent one another geographically, they ought to be treated only as subspecies. This diversity of opinion between Professor Matschie and myself is more apparent than real, for in many cases Professor Matschie regards what I call " species " as genera or subgenera, while he considers what I call " subspecies" to be species, thus only differing in the terms to apply to certain categories of individuals. According to our present state of knowledge of the Chimpanzees, there are two very well-defined groups, namely, the Simia satyrus group, with black or blackish-brown faces when adult, and the Simia pygmceus group, with pale faces both in the adult and young stages. From this it will be seen that I differ entirely in one point of nomenclature from Professor Matschie-namely, I hold that a specific name can be used for a species, even if previously used in a different sense, so long as the species first denoted by the name has since been placed in another genus. I therefore consider Simia pygmceus applicable to one of the races of Chimpanzee, because Linnaeus's Simia pygmceus must now stand as Pongo pygmceus. In addition to the seven forms of Simia recognised by Matschie in his paper (Sitzungsber. Ges. nat. Fr. Berl. 1904, pp. 54-69), there are several more, among which is a pale-faced Chimpanzee which comes from some part of the French Congo, which I propose to name Simia pygmceus raripilosus, subsp. nov., distinguished from other forms of Simia pygmceus by the sparse, almost absent, beard, narrow protruding face, and very long limbs, largish ears, rounded foi'e-head, and only partially divided hair on the head. Professor Matscliie's paper gives the forms as follows:- 1. S im ia satyru s L. Syst. Nat. i. p. 25 (1758). (Text-figs. 105, 106, 107, & 109, fig. 1, pp. 423, 424, 426.) Synonyms: Simia troglodytes Gm., 1788; Troglodytes niger Geoffr., 1812 ; Troglodytes koolo-kamba Du Chaillu, 1861 ; Troglodytes aubryi Gmtiolet & Alix, 1866 ; Pseudanthropus fuliqinosus Schaufuss, 1875. Distribution. Lower Guinea from Sanaga in the Camaroons to the Ogowe. Distinctive characters. External: hair of head not parted in centre; hair on forehead falls out in adults, but not so far as level of ears. Ears medium size, 65 x 50 millimetres. A narrow beard of thick short hairs pointed downwards surrounds the face except chin, which is sparsely covered with dark grey hairs. Arms very long, exceeding 700 mm. Colour of face in the young leather-yellow, in adult animals blackish brown. Cranial characters: facial portion of skull very narrow, much constricted behind the canine teeth ; the greatest breadth of the skull is never more than 1 mm. greater at the canines than at the molars. The brain-case is an elongate egg-shape, measuring from the glabella to the protuberantia occipitalis in the cf c? |