THE BIRDS OF NORTHERN THAILAND 



23 



countries by distinct forms, we find here the Lao race, 

 is illustrated by the following list : 



The last point 



Sphenurus apicauda 

 Harpactes erythrocephalus 

 Picus chorolophus 

 Picas flavinucha 

 Crypsirina vagabunda 

 Paradoxomis gularis 

 Pteruthius erythropterus 

 Siva castaniceps 

 Pomatorhinus schist iceps 

 Napothera epilepidota 

 Aethopyga siparaja 



W 



apicauda 



erythrocephalus 



burmae 



lylei 



kinneari 



transfluvialis 



aeralatus 



striata 



ripponi 



bakeri 



seheriae 



E 



laotianus 



annamensis 



laotianus 



archon 



salceratcnsis 



laotiana 



yunnanensis 



torqueola 



humilis 



laotiana 



cara 



Map 4. — Western Thailand, the Thai portion of the Indo-Burmese Province of the 

 Indo-Chinese Subregion: 



1. Northwestern Thailand. 



2. Southwestern Thailand. 



