PLANESTICUS. 545 



527. PLANESTICUS KELLERI (Mearns). 

 KELLER'S BLACK THRUSH. 



Merula kelleri MEARNS, Proc. Biol. Soc. Wash. (1905), 18, 6; MCGREGOR 

 and WORCESTER, Hand-List (1906), 83. 



P6-lo, Bagobo of Mount Apo. 

 Mindanao (Mearns, Goodfellow). 



Adult. This species is almost exactly like P. thomassoni in colors, 

 but is considerably smaller in size. A male collected by Mearns measures : 

 Length, 246; wing, 110; tail, 94;. culmen from base, 21; bill from 

 nostril, 13; tarsus, 31. 



A female, wing, 110; tail, 89; culmen from base, 20; bill from nostril, 

 12 ; tarsus, 30. 



528. PLANESTICUS NIGRORUM (Grant). 

 NEGROS BLACK THRUSH, 



Turdus nigrorum GRANT, Ibis (1896), 544; GRANT and WHITEHEAD, Ibis 

 (1898), 238, pi. 5, figs. 8 and 9 (eggs); WHITEHEAD, Ibis (1899), 

 213 (nest). 



Merula nigrorum SHARPE, Hand-List (1903), 4, 119; GATES and REID, Cat. 

 Birds' Eggs (1905), 4, pi. 5, fig. 18; MCGREGOR and WORCESTER, Hand- 

 List (1906), 83. 



Negros (Whitehead). 



"Adult male and female. Above rich dark umber, darkest on the top 

 of the head; wings and tail brownish black; chin, throat, and chest pale 

 sooty brown, rather lighter on the breast, flanks, and belly; a band of 

 white feathers across the vent; under tail-coverts dark brown, with pale 

 whitish-brown tips. Bill and feet yellow. Male : Length, 241 ; wing, 

 124; tail, 96.5; tarsus, 34. Female: Length, 223.5; wing, 119; tail, 91; 

 tarsus, 31.5. 



"An immature male has the upper parts much like those of the adult, 

 but the feathers of the back have indistinct margins of darker color, the 

 chin and middle of the throat are buff, and the breast and under parts 

 spotted with black and washed with rufous, shading into tawny buff on 

 the middle of the belly. 



"The Negros blackbird is resident on the volcano of Canloon at an 

 altitude of from 1,600 to 2,000 meters, and both young birds and eggs 

 were obtained." (Grant.) 



A nest containing two "much incubated" eggs was taken by White- 

 head on April 12, 1896, and another nest with two young birds was found 

 on the 21st of the same month. The eggs are described as follows : 

 "Shape ovate. Ground-color very pale green; one egg very thickly 

 mottled with brick-red, almost hiding the ground-color; the second 

 blotched toward the larger end and more thinly marked over the rest of 



