10 



BULLETIN 159, UNITED STATES NATIONAL MUSEUM 



PULO SERAIA 



Butorides javanicus abbotti. 

 Myristicivora bicolor. 

 Hypurolepis javanica mesata. 



Muscitrea grisola secedens. 

 Cinnyris ornata zapega. 

 Cinnyris brasiliana axantha. 



SIRHASSEN ISLAND 



Accipiter virgatus virgalus. 

 Amaurornis phoenicura javanica. 

 Pluvialis dominica fulva. 

 Chalcophaps indica indica. 

 Geopelia striata striata. 

 Muscadivores aeneus diatropurus. 

 Myristicivora bicolor. 

 Dendrophassa fiilvicollis fulvicollis. 

 Dendrophassa vernans pellochlora. 

 Eudynamis scolopacea malayana. 

 Psittacula longicauda. 

 Sauropatis chloris cyanescens. 

 Hirundo rustica gutturalis. 

 Artamus leucoryn. macroterus. 



Muscitrea grisola secedens. 

 Arizelomyia latirostris lalirostris. 

 Hypolhyvns azurea gigantoptera. 

 Pycnonotus simplex perplexus. 

 Locustella certhiola. 

 Orthotomus sericeus rubicundulus. 

 Budytes flavus taivanus. 

 Gracula religiosa religiosa. 

 Lamprocorax panayensis heterochlorus . 

 Arachnothera longirostra atita. 

 Anthreptes malacensis erixanthus. 

 Cinnyris ornata zapega. 

 Uroloncha fuscans. 



PULO SUB! 



Psittacula longicauda. 

 Sauropatis chloris cyanescens. 

 Artarmis leucoryn. macroterus. 

 Muscitrea grisola secedens. 



Pycnonotus simplex perplexus. 

 Orthotomus sericeus rubicundulus. 

 Cinnyris ornata zapega. 



FAUNAL RELATIONSHIPS 



As would of course be expected, the faunal relationships of the 

 Natuna Islands are with the islands in the South China Sea and the 

 larger land masses, islands, and mainland surrounding this body of 

 water. 



Of the 127 birds known from the Natuna Islands, 19 are not known 

 to breed, and therefore are to be disregarded in any comparison 

 designed to indicate faunal relationships. These species are as 

 follows : 



Butorides javanicus amurensis. 



Arenaria interpres oahuensis. 



Squatarola squatarola hypomela. 



Pluvialis dominica fulva. 



Eupoda vereda. 



Pagoa leschenaultii. 



Charadrius mongolus. 



Leucopolius alexandrinus alexandrinus . 



Phaeopus phaeopus variegatus. 



Ldmosa lapponica baueri. 



Actitis hypoleuca. 

 Rhyacophilus glareola. 

 Pisobia ruficollis. 

 Eurystomus orientalis calonyx. 

 Hirundo rustica gutturalis. 

 Petrophila solitaria philippensis. 

 Locustella certhiola. 

 Acanthopneuste borealis borealis. 

 Budytes flavus taivanus. 



The 108 remaining species and subspecies, would, therefore, form 

 the basis of faunal considerations; and for such purpose there is rela- 

 tively so little difference between the northern and southern groups 



