SCLATER ON THE GENERAL DISTRIBUTION OF AVES. 139 



rous. Several groups of birds, which seem clearly entitled to rank 

 as distinct families, or at least as subfamilies, are wholly peculiar 

 to this region, such as the Coliidce, Musophagidce, and TSupliaginoe. 

 There are also very many genera, of which the species are all con- 

 fined to this continent ; the principal of which I have enumerated 

 in my List of Typical forms. The island of Madagascar, however, 

 is the locality where the African type seems pushed to its utmost 

 degree of development. There are many genera quite peculiar to 

 this island, or which have a single representative or so upon the 

 adjacent coast of the continent. Such are Qriolia, Atelornis, Bra- 

 chypter acias, Vcmga, and others which I have mentioned above, not 

 to mention the extinct gigantic JEpyornis. Bourbon, Mauritius 

 and the other Mascarene islands all belong to Africa zoologically, 

 and have only recently lost the now extinct birds of the genera 

 Didus, Pezophaps and their allies, which were, so far as we know, 

 types quite peculiar to this locality. 



Dr. Gr. Hartlaub's lately published System der Omitlwlogie 

 West- Africa' s gives as inhabitants of that part of the continent, — 



Accipitres 56 -n 



Passeres 450 



Scansores 69 



Columba3 17 



Galling 19,' 



Struthiones 1 



Grails 99 | 



Anseres ...... 42 



^753. 



J 



In the preface to Dr. Hartlaub's work will be found a resume 

 of all the most important facts known concerning African Orni- 

 thology. 



For North-eastern Africa we have a List lately published by 

 Dr. Heuglin, who mentions — 



S-754 species. 



A correct catalogue of the Birds of S. Africa would probably be 

 not less numerous in species. 



10* 



