THE BIEDS OF THE NATUNA ISLANDS 103 



3. Graucalus sumatrensis halistephis (Oberholser). 



Artamides sumatrensis halistephis Oberholser, Smithsonian Misc. Coll., vol. 60, 

 no. 7, p. 14, Oct. 26, 1912. ("South Pagi Islands.") 



Geographic distribution. — Pagi Islands, Barussan Islands, western 

 Sumatra. 



4. Graucalus sumatrensis crissalis Salvador!. 



Graucalus crissalis Salvadori, Ann. Mus. Civ. Stor. Nat. Genova, ser. 2, vol. 14, 

 p. 592, Nov. 12, 1894. ("Si Oban, Sipora [Island], Isole Mentawei.") 



Geographic distribution. — Mentawi group, Barussan Islands, west- 

 ern Sumatra. 



5. Graucalus sumatrensis kannegieteri (Biittikofer). 



Artamides Kannegieteri BtJTTiKOFER, Notes Leyden Mus., vol. 18, nos. 2, 3, 

 Note 21, p. 175, Dec. 24, 1896. ("Lahagoe, Nias.") 



Geographic distribution. — Nias Island, Barussan Islands, western 

 Sumatra. 



6. Graucalus sumatrensis babiensis Richmond. 



Graucalus babiensis Richmond, Proc. U. S. Nat. Mus., vol. 26, p. 513, Feb. 4, 

 1903. ("Pulo Babi, west coast of Sumatra.") 



Geographic distribution. — ^Island of Babi, Barussan Islands, western 

 Sumatra. 



7. Graucalus sumatrensis simalurensis Richmond. 



Graucalus simalurensis Richmond, Proc. U. S. Nat. Mus., vol. 26, p. 513, Feb. 4, 

 1903. ("Simalur Island, west coast of Sumatra.") 



Geographic distribution. — Simalur Island, Barussan Islands, western 

 Sumatra. 



8. Graucalus sumatrensis nesiarchus (Oberholser). 



Artamides sumatrensis nesiarchus Oberholser, Journ. Washington Acad. Sci., 

 vol. 18, no. 19, p. 517, Nov. 18, 1926. ("Pulo Parit, near Karimon Island, 

 eastern Sumatra.") 



Geographic distribution. — Islands between Sumatra and the Malay 

 Peninsula. 



9. Graucalus sumatrensis messeris (Oberholser). 



Artamides sumatrensis messeris Oberholser, Journ. Washington Acad. Sci., vol. 

 18, no. 19, p. 517, Nov. 18, 1926. ("Trang, Lower Siam.") 



Geographic distribution. — Malay Peninsula, 



10. Graucalus sumatrensis calipolius (Oberholser). 



Artamides sumatrensis calipolius Oberholser, U. S. Nat. Mus. Bull. no. 98, p. 34, 

 June 30, 1917. ("Pulo Mata, Anamba Islands.") 



Geographic distribution. — Anamba Islands, South China Sea. 



11. Graucalus sumatrensis bungurensis Hartert. 



Graucalus bungurensis Hartert, Nov. Zool., vol. 1, no. 2, p. 477, Apr. 16, 1894. 

 ("Bunguran.") 



Geographic distribution. — Natuna Islands, South China Sea. 



