ANTELOPES. 147 



instance of closely allied species occuiTing in two of the most widely separated portions of the 

 former great Africano-Indian continent. 



Group 2. Catoblepas. — Two species. The two Guus, both South African. 



Group •'! BrBAi.us. — Four species. Two peculiar to North Africa, one to East Africa (Mo- 

 zambique) and two to South Africa. 



Group 4. Oryx. — Pour species. Two of them are found in the Nile district, one of which 

 extends eastwards into Arabia and Persia, and the other southwards to the Cape of Good Hope ; 

 the two others are also African, one being found in Senegal and the other in South Africa. 



Grouji 5. Gazella. — Eight species. Tliese, like the last group, belong to the district con- 

 necting Asia and Africa, and are found partly in both ; one is Persian, two are Arabian, three 

 belong to the Nile district, Nubia, Sennaar, and Abyssinia, and two ro South Africa. This 

 distribution may have been the residt of an extension of species from South Africa, subsequent 

 to the land and water having assumed their pi'esent configuration. 



Group 6. Tragei.aphus. — Four species. Two in the Nile district, two pretty gencrallj' dis- 

 tributed from Abyssinia to the Cape, one of them also in Guinea, and another sjjecics pecidiar to 

 West Africa. 



Grouji 7. Antilope. — Five species. These, with one exception, are Asiatic species; one 

 being Indian ; two Thibetan or Chinese, and the range of another already mentioned (A. Saiga), 

 extending from Poland to Altai and Irkutsk. There is, however, one species from South Africa 

 (Bechuanaland) (A. melajipus, Lichf), whose presence there is anomalous. 



Group 8. REnuNC'A. — Nine species, strictly African, and chiefly south and east African. The 

 east coast of Africa seems to have had much more unrestricted communication with the Cape than 

 the west coast, at any rate, greater affinity exists between the species of the two. In all classes 

 the majority of species which are found at the Cape extend their range up to Natal, Mozambique, 

 and even further, while on the west coast it is the exception to find them reaching Gaboon, Guinea, 

 or Senegal. It is so in this grouj). One species is found in Senegal, and another extends across the 

 Continent, and is found both in Senegal and Abyssinia, while, on the other hand, there are four Cape 

 species, and four Abyssinian, including the sp)ecies which is also found in Senegal. 



Group 9. Oreotragus.* — Three species. All from the Cape and refeired to three genera, — 

 Oreotragus, Tkagulus, and Calotragus. 



Group 10. Cepiialolophus. — Twelve species. This is a group, composed chiefly of diminutive 

 species peculiar to Africa, and remarkable from their a good deal resembling not only in their 

 external apj)earance, but also in having a long extensile tongue, the Mvntjacs and CIIE^ kotains of 

 south-east Asia. Blj'th thinks that the resemblance extends to the American Rodent Agoutis, if not 

 also to the smaller fossil Pachyderms, of the genus Lophiodon ; and there undoubtedly is a certain 

 similarity in the pig-like form and short, slender limbs, which prcjbably may indicate affinity 

 with the Lophiodons ; but if there is any with the Agoutis, it must be very distant and through the 

 Pachyderms themselves. The type is West African, six of the twelve species being found in 

 Guinea, Senegal, and Fernando Po, three on the east coast of Africa, viz. Abyssinia, Mozambique, 

 and Natal, two in South Africa, and one (the Nylghau), (which should perhaps scarcely be placed- 

 in the same group as the smaller species) in North India. This, again, is anotlier instance of au 

 African form being found in the Indian district. 



* GlEDEL uses the uamc Tragulus for this section, employed for tlie Chevuotains, I have taken another of 

 being that of one of the genera ; but as that name is also the genera \^Oreoteagus) for the type of the group. 



