. The annals and magazine of natural history : zoology, botany, and geology. ior asiject theupper edge of the rhinarium appears to be biconvex with anangular median depression and from the dorsal aspect theanterior edge is seen to be transversely truncated. The hairsof the upper side of the nose extend some distance betweenthe nostrils, although not so far as in Oryx, so that theposterior border of the rhinarium is strongly concave. T\\e, penis (fig, 4, E) resembles that of j^goryx, describedabove, in the thickness, length, and freedom of the tubularprolongation of the urethral canal, but the
. The annals and magazine of natural history : zoology, botany, and geology. ior asiject theupper edge of the rhinarium appears to be biconvex with anangular median depression and from the dorsal aspect theanterior edge is seen to be transversely truncated. The hairsof the upper side of the nose extend some distance betweenthe nostrils, although not so far as in Oryx, so that theposterior border of the rhinarium is strongly concave. T\\e, penis (fig, 4, E) resembles that of j^goryx, describedabove, in the thickness, length, and freedom of the tubularprolongation of the urethral canal, but the termination oftlie glans is less markedly bulbous. The Oryginre, apart from Addax which requires examina-tion, are a remarkably uniform group with respect to the 224 Characlcrs of Ruminant Artiodactyla. strnctnre of the priiis, the presence of four mammpc, theabseiiee of inguinal j^lantls, and tlie j)resciice on all lourfeet of Hask-slia|)e(l pidal glands uiih narrow exit passageand small cirevilar orifice just behind tlic summit of theinterungual web. l^iff. A. Muzzle and rbinarium of Hippotragns niyer from the front. B. The same from above. X4. Setting Addax aside, the genera discussed in this papermay be distinguished as follows :— a. Rhinarium sculptured, with distinct philtrum reach-ing lower edge of upper lip ; upper rim of dilatednostrils swollen ; horns rising erect from head . Tlhinarium smooth, without philtrum, upper lipentire ; upper rim of narrow nostrils not swollen ;horns inclined backwards in the plane of Preorbital gland present as a thickened pad of skinlike that of Hippolragus; rhinaiium shallow; horns curved JEgoryx. b. Preorbital gland absent; rhinarium deeper; horns straight Oryx. On new Species 0/Syiitoniidse, Nyniplialida% d:c. 225 Addax differs from the three above enumerated genera inhaving broad rounded hoofs, the iiiterdigital Aveb exceedingly-thick above, the pedal glands represented by a short narrowcyl
Size: 1548px × 1614px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookidser9annalsmaga, booksubjectnaturalhistory
