THE BIRDS OF THE NATUNA ISLANDS 73 



15. Mixornis rubicapilla prillvntzi Hartert. 



Mixornis prillwitzi Hartert, Bull. Brit. Orn. Club, vol. 12, no. 84, p. 32, Dec. 30, 

 1901. (" Kangean Island, north of Bali, in the Java Sea.") 



Geographic distribution. — Kangean Island, Java Sea. 



16. Mixornis rubicapilla everetti Hartert. 



Mixornis everetti Hartert, Nov. Zool., vol. 1, no. 2, p. 472, Apr. 16, 1894. (" Bung- 

 uran.") 

 Geographic distribution. — Bunguran Island, Natuna Islands. 



17. Mixornis rubicapilla zaperissa Oberholser. 

 Mixornis rubicapilla zaperissa Oberholser, antea, p. 68. 



Geographic distribution. — Northern part of Natuna Islands (Pulo 

 Laiit, Pulo Lingung, Pulo Kombeh, and probably other islands except 

 Bunguran). 



18. Mixornis rubicapilla zophera Oberholser. 



Mixornis pileata zophera Oberholser, U. S. Nat. Mus. Bull. 98, p. 49, June 30, 

 1917. (" Pulo Telaga, Anamba Islands.") 



Geographic distribution. — Anamba Islands, South China Sea. 



19. Mixornis rubicapilla woodi Sharpe. 



Mixornis Woodi Sharpe, Trans. Linn. Soc. London, ser. 2, vol. 1, pt. 6, p. 331, 

 Nov., 1877. ("Puerto Princesa, Palawan," "Philippine Archipelago.") 



Geographic distribution. — Palawan and Balabac Islands, Philippine 



Islands. 



STACHYRIS NIGRICEPS NATUNENSIS Hartert 



Stachyris natunensis Hartert, Nov. Zool., vol. 1, no. 2, p. 470, Apr. 16, 1894. 

 (" Insula Bunguran,") 



Six specimens were obtained by Doctor Abbott, as follows : 



Adult male, U.S.N.M. No. 174772, Bunguran Island, July 6, 

 1900. Length in flesh, 140 mm. 



Adult male, U.S.N.M. No. 174771, Bunguran Island, July 20, 

 1900. Length in flesh, 133 mm. "Iris pale brownish yellow, tinged 

 with pink; feet greenish leaden; bill blackish leaden." 



Adult male, U.S.N.M. No. 174770, Bunguran Island, July 20, 

 1900. Length in flesh, 133 mm. " Feet greenish leaden; bill blackish; 

 iris pale brownish yellow." 



Adult male, U.S.N.M. No. 174769, Bunguran Island, July 21, 

 1900. Length in flesh, 143 mm. "Feet pale green; bill blackish 

 horny." 



Juvenal male, U.S.N.M. No. 174767, Bunguran Island, July 21, 

 1900. Length in flesh, 140 mm. 



Juvenal female?, U.S.N.M. No. 174768, Bunguran Island, July 26, 

 1900. Length in flesh, 143 mm. 



These additional examples bear out the distinguishing characters 

 assigned by Doctor Hartert to this race, although there is considerable 

 individual variation in the richness and depth of the color of the under 

 surface. All are in process of molt, this in most of them involving 

 both quills and contour feathers. The two in juvenal plumage differ 



