18 BULLETIN 98, UNITED STATES NATIONAL MUSEUM. 



Family TRERONIDAE. 



MYRISTICIVORA BICOLOR (Scopoli). 



Columba bicolor Scopoli, Del. Flor. et Faun. Insubr., pt. 2, 1786, p. 94 (New- 

 Guinea) . 



Five specimens in perfect plumage, although the white areas are 

 more or less soiled : 



Adult female, No. 174663, U.S.N.M; Pulo Rittan, May 21, 1900. 

 Length, 400 mm. "Bill blue, black at tip; feet pale blue, claws 

 black." 



Adult female, No. 170901, U.S.N.M.; Pulo Piling, August 17, 1899. 

 Length, 394 mm. 



Adult male, No. 170902, U.S.N.M.; Pulo Piling, August 17, 1899. 

 Length, 394 mm. 



Adult male, No. 170900, U.S.N.M.; Pulo Piling, August 17, 1899. 

 Length, 381 mm. 



Adult male, No. 170903, U.S.N.M.; Pulo Piling, August 17, 1899. 

 Length, 407.5 mm. "Iris dark brown; bill pale blue, black at tip; 

 feet light blue, claws black." 



These all appear to be identical, both in size and color, with birds 

 from the Philippine Islands, Celebes, and Sumatra. Two of our 

 birds, Nos. 170900 and 170901, have a few spots of blackish on the 

 lower tail-coverts, but the others have this part immaculate. Doctor 

 Abbott says that on Pulo Piling, August 17, 1899, this species was 

 "common, feeding in flocks of 12-15 upon wild fruit trees." On an 

 islet off Pulo Mobur, from August 24 to September 1, 1899, a few 

 individuals came to roost at night. This pigeon was seen also on 

 Pulo Riabu, August 18, 1899. 



MUSCADIVORES AENEUS POLIUS, new subspecies. 



Subspecijic characters. — Similar to Muscadivores aeneus aeneus, from 

 Borneo, but averaging somewhat smaller, tail more greenish (i. e., 

 less bluish); pileum and nape paler, more grayish (less vinaceous); 

 and lower parts slightly paler. 



Description.— Type, adult male, No. 170923, U.S.N.M.; Pulo 

 Siantan, Anamba Islands, August 20, 1899; Dr. W. L. Abbott. 

 Head, throat, and cervix, vinaceous gray, the lower part of the 

 cervix nearly pure gray; chin, extreme anterior part of forehead, 

 and orbital ring, cream white; remaining upper parts metallic bluish 

 green, with a strong bronzy sheen; tail bluish green, with a slight 

 metallic sheen, the middle pair of rectrices most decidedly blue; 

 tertials metallic green like the back; primaries and secondaries dull 

 brown on basal two-thirds of inner half of inner webs, glaucous green- 

 ish slate color on remaining portions, the outer vanes of secondaries 



