108 BULLETIN 159, UNITED STATES NATIONAL MUSEUM 



anteriorly the same, posteriorly citrine; chin colonial buff; throat, 

 breast, sides, and flanks, dull light olive-gray washed with yellowish, 

 more so posterioriy; abdomen, crissum, and center of breast, reed 

 yellow; thighs pale olive-gray much washed with reed yellow; lining 

 of wing anteriorly marguerite yellow, posteriorly white, the edges of 

 the wings tinged with olivaceous. "Iris brownish red." 



Measurements of type. — Total length (in flesh), 130 mm.; wing, 63; 

 tail, 48; exposed culmen, 14; height of bill at base, 4; tarsus, 14; middle 

 toe without claw, 9.5. 



Though we have seen but a single specimen of this species of sun- 

 bird from the Natuna Islands, this bird is so consistently different 

 from the other races that we have little hesitancy in separating it 

 subspecifically. It may be distinguished from both Anthreptes 

 simplex simplicior Oberholser ^^ of Borneo, and Anthreptes simplex 

 simplex, of Sumatra, by larger size, lighter, more golden upper surface, 

 and paler lowerparts with the middle of abdomen more clearly yellow. 



The races of Anthreptes simplex now number 4, as outlined below: 



1. Anthreptes simplex simplex (Miiller). 



Nectarinia simplex S. Muller, Verhandelingen over de Natuurlijke Geschiedenis 

 der Nederlandsche overzeeische Bezittingen, vol. 1, Land-en Volkenkunde, 

 p. 173 (footnote), 1843, ("Sumatra en Borneo" [type locality, Sumatra]). 



Geographic distribution. — Sumatra. 



2. Anthreptes simplex simplicior Oberholser. 



Anthreptes simplex simplicior Oberholser, Journ. Washington Acad. Sci., vol. 13, 

 no. 11, p. 229, June 4, 1923. ("Central Borneo.") 



Geographic distribution. — Borneo . 



3. Anthreptes simplex euthapsinus Oberholser. 



Anthreptes simplex euthapsinus Oberholser, antea, p. 107. 



Geographic distribution. — Natuna Islands. 



4. Anthreptes simplex frontalis (Blyth). 



Nect[arinia]. (v. Anthreptes) frontalis Blyth, Journ. Asiatic Soc. Bengal, vol. 14, 

 pt. 2, no. 164 (new ser. no. 80) p. 558, "August," 1845. ("Singapore.") 



Geographic distribution. — Singapore, and Malay Peninsula to Siam 

 and Burma. 



•ANTHREPTES HYPOGRAMMICUS HYPOGRAMMICUS (MUUer) 



Nectarinia hypogrammica S. Mxjller, Verhandelingen over de Natuurlijke Ge- 

 schiedenis Nederlandsche overzeeische Bezittingen, vol. 1, Land-en Volkenkunde, 

 p. 173, footnote, 1843. ("Sumatra en Borneo"; type locality designated as 

 Sumatra by Hartert, Bull. Brit. Orn. Club, vol. 38, no. 229, p. 27, Dec. 

 29, 1917). 



Recorded by Doctor Hartert ^* from Bunguran Island. 



M Journ. Washington Acad. Scl., vol. 13, no. 11, p. 229, June 4, 1923. 

 •' Nov. Zool., vol. 1, no. 2, p. 474, Apr. 10, 1894. 



