202 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



CHOTOREA MYSTACOPHANES MYSTACOPHANES (Temminck) 



Ducco mystacophanes Temminck, Nouveau recueil de planches colorizes d'oiseaux, 



livr. 53, pi. 315, Dec. 1824 (Sumatra). 

 Cyanops myslacophanes aurantiifrons Robinson and Kloss, Journ. Nat. Hist. 



See. Siam, vol. 3, p. 100, 1919 (Nong Kok, Ghirbi, Peninsular Siain). 



Three males, Sichol, Bandon, May 16-19, 1930; one male, Ban 

 Kiriwon<]j, Nakon Sritamarat, July 10, 1928; two females, Kao Luang, 

 Nakon Sritamarat, July 16-23, 1928 ; two males, Wat Kiriwong, Nakon 

 Sritamarat, July 25, 1928; one male, Tha Lo, Bandon, September 25, 

 1931; one male Kao Cliong, Trang, September 8, 1933. 



Dr. W. L, Abbott took three males and five females in Trang 

 (Kao Nok Ram, 1,000 feet, January 4, 1899; Lay Song Hong, Sep- 

 tember 2-November 22, 1896); two females in Trengganu (Dimgun 

 River, September 24, and Tanjong Laboha, September 29, 1900); 

 two males in Pahang (Rumpin River, May 25, and July 12, 1902); 

 and two males in Tenasserim (Bok Pyin, February 15, 1900, and 

 Telok Besar, March 18, 1904). He describes the soft parts as: Iris 

 brown; bill black (male), black with the base of the lower mandible 

 pale fleshy or pale gray (female) ; feet greenish leaden or olive. 



Robinson and Kloss "* state that the characters upon which they 

 founded their C. m. aurantiifrons are not stable and cannot be main- 

 tained. 



There is a sexual difference in this species. The female differs from 

 the male in having the throat light green with light yellow shaft 

 streaks instead of scarlet-red; the forehead is a much lighter yellow 

 separated from the red occipital spot by a narrow green band; bluish 

 green above the eye instead of black; malar spot bluish green instead 

 of bright yellow; the blue suborbital and jugular spots much re- 

 duced and lighter in color; the red frontal apex spot is present but 

 faint. This is quite different from Robinson and Kloss's " remarks 

 upon this sex. The above is probably a fully adult female, but there 

 are six other females in the series that have a yellow frontal band and 

 differ from the one described only in having a broader green band 

 separating the yellow frontal band from the red occipital spot. There 

 is only one female in the series without a yellow frontal band, and in 

 this specimen it is bluish green. All the females have a smaU red spot 

 at the frontal apex. Two specimens marked as females have a few 

 red feathers appearing on the tliroat and the red spots on each side 

 of the chest are more pronounced than in the other females (nos. 

 160232 and 160234, Lay Song Hong, Trang, October 30 and November 

 6) ; they may be wrongly sexed or very old birds. Several immature 

 males in the series show that the adult plumage is acquired early. 

 The yellow frontal band is acquired early and even in the youngest is 



'« Journ. Siam Soc. Nat. Hist., vol. fi, p. 161, 1923. 

 »« Ibid., p. 162. 



