OCR Text |
Show 1880.] NEW SPECIES OF NEOTRAGUS. 19 Thirdly, the nasal bones, the shortness of which is characteristic of the genus, are still shorter than in Neotragus saltianus; and their posterior margins form an almost straight transverse line, whilst in Neotragus saltianus they form an acute angle (see figs. 5 & 6, p. 20). Fig. 2. Skull of Neotragus kirkii ; side view. Skull of Neotragus saltianus. Fourthly, the infero-posterior angle of the mandible (fig. 2) is produced backwards, forming a projection beyond the hind margin of the mandible ; whilst in Neotragus saltianus (fig. 3) the hind margin is only slightly excised. It must be remarked, however, that this peculiarity is much less developed in the young female than in the adult male. Fifthly, the hindmost molar of the lower jaw has a small third lobe developed behind with a single enamel fold, as in the species from Damara Land (see fig. 12, p. 22); this lobe is entirely absent in N. saltianus (see fig. 11, p. 22). 2» |