20 PROCEEDINGS OF THE NATIONAL. MUSEUM vol.75 



the type not quite adult. They measure (the type first) : Wing, 

 98-102; tail, 95-105; culmen, 19.5-19 mm. The two Siberut males 

 measure: Wing, 10^100; tail, 98.5-97; culmen, 18.5-18.5 mm. 



CHALCOCOCCYX XANTHORHYNCHUS (Horsfield) 



Cuculus xanthorhyncJius Hoksfield, Trans. Linn. Soc. London, vol. 13, 1821, 



p. 179 (Java). 

 Chalcococcyx xanthorhynchus Chasen and Kloss, Ibis, 1926, p. 284. 



One male, Sipora. 



The United States National Museum contains only five specimens 

 of this species. Three from Sumatra, one from Palawan, and one 

 from Mindanao, Philippines, The three Sumatran specimens are 

 somewhat alike; all have a bronzy wash mixed with the violet of 

 the upper parts. The Sipora specimen lacks the bronzy wash on 

 the upper parts and the violet comes near prune purple (blackish 

 purple in the Sumatran specimens) ; the bill is about the same size 

 as the Sumatran birds. In color the Palawan bird is like that of 

 Sipora, but the bill is much smaller. The specimen from Mindanao 

 is somewhat intermediate between that of Sumatra and Palawan, 

 but the bill is about the same size as in the Sumatran specimens. 

 When sufficient material is available it Avill probably be found that 

 the species breaks up into a number of more or less well-defined races. 



CENTROPUS SINENSIS BUBUTUS Horsfield 



Centropus J}ul)utns Hoksfield, Trans. Linn. Soc. London, vol. 13, 1S21, p. 



ISO (Java). 

 Centropus sinensis iuiutus Chasen and Kloss, Ibis, 1926, p. 284. 



One male, Siberut. 



The National Museum possesses only a male and female of the 

 coucal from Java; the female much more purplish on the hind-neck 

 than the male. The Siberut specimen resembles the Javan male, 

 except the iridescence on the hind-neck is more bluish and the tail 

 is more bronze green ; they are about the same size. 



Throe adult males and two unsexed adults from Nias Island are 

 more purplish on the hind-neck, but do not differ in size. The color 

 of the hind-neck seems to vary somewhat, probably due to age. 



UROCOCCYX AENEICAUDA (J. and E. Verreaux) 



Phoenicophaciis aeneicaudus J. and E. Verreaux, Rev. et Mag. Zool., 1855, 

 p. 375 (Ceylon, error; type locality designated by Chasen and Kloss, Ibis, 

 1926, p. 285, Sipora Island). 



Phoenicophaes curvirostris aeneicaudus Chasen and Kloss, Ibis, 1926, 

 p. 2&1. 



Three males, six females, and one unsexed, Siberut; six males, six 

 females, and one unsexed, Sipora. 



