56 



BULLETIN 159, UNITED STATES NATIONAL MUSEUM 



Adult male, U.S.N.M. No. 174807, Pulo Subi, June 13, 1900. 



Adult male, U.S.N.M. No. 174808, Pulo Seraia, May 29, 1900. 

 "Iris dark red; bill black; feet leaden blue; soles yello\\asli. " 



Adult female, U.S.N.M. No. 174801, Sirhassen Island, June 1, 1900. 

 "Bill black; feet leaden blue; soles yellowish." 



Adult female, U.S.N.M. No. 174804, Sirhassen Island, June 1, 1900. 



Adult female, U.S.N.M. No. 174803, Sirhassen Island, June 3, 1900. 

 "Iris dark brownish red; bill black." 



Adult female, U.S.N.M. No. 174806, Pulo Subi, June 12, 1900. 



Adult female, U.S.N.M. No. 174809, Pulo Seraia, May 29, 1900. 

 "Bill black; feet leaden blue; soles yellowish." 



Adult female, U.S.N.M. No. 174805, Brian Island, near Sirhassen 

 Island, May 31, 1900. "Iris dark brown; bill black; feet leaden; 

 soles yellowish. " 



In three of these specimens, No. 174809, taken on May 29, and Nos. 

 174801 and 174804, taken on June 1, molt of both quills and contour 

 feathers is already in process, but in the other 6 individuals it seems 

 not yet to have begun. 



Measurements are given in Table 15. 



There is considerable individual variation in the color of both 

 pileuni and back in the birds of this series; in some the color of these 

 parts, one or the other, or both, is more grayish, in others more 

 brownish or rufescent, this difference amounting practically to two 

 color phases. 



Table 15. — Measurements of specimens oj Muscitrea grisola secedens 



Locality 



Pulo Seraia 



Sirhassen Island 



Pulo Subi 



Pulo Seraia 



Brian Island 



Sirhassen Island 



do 



do 



Pulo Subi 



Date 



1900 

 May 29 

 June 3 

 June 13 

 May 29 

 May 31 

 June 1 



do-. 



June 3 

 June 12 



Collector .2 



W.L. Abbott. 



do.. 



....do.. 

 ....do., 

 .-..do.. 

 ....do.. 

 — .do.. 

 ....do.. 

 ....do.. 



s> 



, Mm^ 

 13 

 13 

 12 

 12 

 13 

 12 



12.6- 

 11.6 

 12 



> Measured in the flesh by the collector. 



PfflLENTOMA PYRRHOPTEBA DUBIA Hartert 



Philentoma dubium Hartert, Nov. Zool., vol. 1, no. 2, p. 447, Apr. 16, 1894. 

 ("Bunguran" [Island, Natuna Islands].) 



This race is apparently confined to the Natuna Islands. Doctor 

 Abbott collected two specimens: 



Adult male, U.S.N.M. No. 174826, Bunguran Island, July 3, 1900. 

 "Iris red; bill black; toes leaden blue; tarsi greenish." 



