414 Prof. J. B. Steere on the Distribution of 



of them being spread over the whole archipelago and some 

 species reaching the adjacent countries. A few of them are 

 Bornean genera, perhaps but lately introduced into Paragua, 

 which have not had time to become more widely distributed 

 through the archipelago, and in some cases have hardly as yet 

 formed distinct species. Examples of these are Pernis, Tiga, 

 Buchanga, jEgithina, and Gracula. A few are Philippine 

 genera, diflFerentiated as yet into single species only, or having 

 formerly existed in more species they have been reduced to 

 their present state by the great changes of area and other con- 

 ditions to which the islands are subject. Such are the genera 

 of Cuckoos — Lepidngrammus , Dasy tophus, and Dryococcyx, 

 — the Starling Sarcops, and the curious Timeliine form 

 Dasycrotapha*. 



It is probable that a few genera from this list — among 

 them Scops, Batrachostomus , and Megapodius — will be found 

 to have more than one species in the islands. In this case 

 they will fall into List C, and will in no sense weaken the 

 conclusions of this paper. 



In 53 genera (containing 153 species) each genus is repre- 

 sented in the Philippines by two or more species, each of 

 which exists in a limited area of its own, sharply separated by 

 sea-channels from the similar areas occupied by the other 

 species of the same genus. 



These genera, with the number of species of each found 

 occurring in the archipelago, are as follows (List C) : — 



Prioniturus 4. Xantholsema 2. 



Cyclopsitta 2. Caprimulgus 2. 



Loriculus 7. , Surniculus 2. 



Spilornis 3. Eudynaniis 2. 



Falco 2. Centrococcyx 3. 



Thriponax 4. Buceros 3. 



Mullei'ipicus 3. Craniorrhinus 2. 



Chrysocolaptes 5. Penelopides 6. 



Yungipicus 4. Artamides 5. 



Pelargopsis 2. Edoliisoma 3. 



Actenoides 3. Pseudolalage 2. 



* [Nee Dasycrotoptia, as incorrectly spelt, Cat. B. vii. p. 574. — See 

 P. Z. S. 1878, p. 114.— Ed.] 



