22 P. E. S. WHALLEY 



lower figure (compared with the East African one) is rather what would be expected 

 from the differences in vegetation types. The reasons for the inclusion of Angola 

 in this zone have already been discussed (p. 20). 



East African Zone 



This zone has 70 species of which 12 are apparent endemics. The ratio of en- 

 demics to non-endemics (1 : 6) is the same as in the Congo Basin zone. The in- 

 fluence of West Uganda on the number of species in common with the Congo has 

 already been mentioned. There are 36 species in the East African zone which are 

 also found in the Southern African zone. Of the countries in the Eastern zone, 

 Tanzania has the largest number of apparent endemics (6) and of these, 3 occur only 

 at Amani. One of these is a subspecies of a Congo species, the other two are species 

 with close connections to others in the Congo. This relationship between the fauna 

 at Amani and the Congo region has already been noted by Carcasson (1964) and 

 Moreau (1966). 



North East African Zone 



Only ten species have been collected in this vast area and of these seven are widely 

 distributed over the rest of Africa. The single apparent endemic is known only from 

 the holotype specimen. 



Southern African Zone 



This zone has 60 species of which 15 are apparent endemics. This is a higher 

 ratio of endemics to non-endemics (1 : 4) than in any other zone. Of these apparent 

 endemics, three species occur only in South Africa itself and these are all in the genus 

 Dysodia. Two of the apparent endemics in the zone occur in Botswana and South 

 West Africa only; the remainder are from the other countries in the zone. Only 

 three species are known from Mauritius, which is included in this zone because two 

 of the species are Southern African in distribution. The third species is an apparent 

 endemic which has some affinities with species in the Indo-Australian region. Aldabra 

 has two species, one endemic subspecies differing only slightly from the mainland 

 subspecies and one widespread Southern African species, which also occurs on 

 Mauritius. 



Madagascan Zone 



This zone has 30 species of which 27 are endemic. In this case the term "apparent 

 endemic" is not used since there is more certainty that the species are endemics. 

 The Madagascan fauna has been dealt with in detail elsewhere (Whalley, 1967). 

 One of the three non-endemics is a widespread, tropicopolitan species, another is a 

 common Madagascan species which has been collected once on Mahe in the Seychelles. 

 The third species, R. zophocrana occurs on the Comoro Islands and forms part of an 

 as yet undescribed complex from South Africa and the Seychelles (p. 98). 



Seychelles Zone 



Five species are known from the Seychelles of which three are apparent endemics. 



