416 Prof. J. B. Steere on the Distrib^ition of 



were individuals of two species found inhabiting the same 

 island, though the straits separating islands are in some 

 instances very narrow. This is notably so with the islands 

 of Negros and Cebu, occupied respectively by L. regulus and 

 L. chry sonatas. These islands approach each other so closely 

 at the Straits of Dumaguete that the outlines of houses and 

 trees on one island can be readily discerned from the other. 



The genus of small HornbillSj Fenelopides, with six species, 

 is another good example of the method of distribution of 

 species in this list. Penelopides panini inhabits Guimaras, 

 Panay, Negros, and Masbate ; P. ma7iill(S Luzon and Ma- 

 rinduque; P. affinis Mindanao; P. hasilanica Basilan ; 

 P. samarensis Samar and Leyte ; and P. mindorensis the 

 island of Mindoro. The western islands seena to lack this 

 genus also. 



In 17 genera and 74 species each genus is represented iu 

 tlie islands by several species, two or more of which may be 

 found inhabiting the same island ; but the species thus found 

 together, with the same generic name, differ greatly in size, 

 colouring, or other characteristics, and belong to different 

 natural sections or subgenera. These sections or subgenera 

 themselves may each be represented in the archipelago by 

 several species ; but where this occurs each species is found 

 isolated and separated from all the other species of the same 

 subgenus, just as are the species of the genera given in list C. 

 These genera, with the number of species of each, are the 

 following (List D) : — 



Astur 2. lole 6. 



Ninox 4. Orthotomus 8. 



Merops 2. Dicseum 10. 



Ceyx C. Cinnyris 7. 



Halcyon 5. Ptilopus .3. 



CoUocalia 2. Phabotreroii 6, 



Hypothyrais 4. Osmotreron 2. 



Cyanomyias 2. Turtur 2. 

 Hirundo 3. 



Authors have already attempted iu several cases to raise the 

 natural sections of these genera to generic rank. 



