206 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



CYANOPS HENRICI HENRICI (Tenuninck) 



Bucco henrici Temminck, Nouveau recueil de planches colorizes d'oiseaux, 

 livr. 88, pi. 524, May 1931 (Sumatra). 



Dr. W. L. Abbott took a single male at Lay Song Hong, Trang, 

 December 17, 1896. He describes the soft parts as: Iris dark brown; 

 bill black; feet pale green. This form has not been recorded from 

 Peninsular Siam before. 



Robinson ^* says that this barbet is a low-coimtry bird, occurring 

 from Penang south to Johore. It also inhabits Sumatra. 



The single female examined by me from Sumatra is larger than 

 the male irom Trang; the blue crown spot is smaller and less bright; 

 the yellow forehead duller. It measures: Wing, 97; tail, 53; culmen; 

 28 mm. The single male from Trang measures: Wing, 94.5; tail, 

 51.5, culmen, 26 mm. 



Five old unsexed specimens from Malacca have the culmen equally 

 small or somewhat smaller. If further specimens from Sumatra 

 should show that these differences are constant, then the mainland 

 form is worthy of recognition as a distinct form, for which the name 

 Bucco rubritorquis Peale ^^ would be available. 



A smaller form of the species is found in Borneo. 



CYANOPS INCOGNITA (Hume) 



Megalaima incognita Hume, Stray Feathers, vol. 2, p. 442, 1874 (25 miles north 

 of Yea and Karope, Tenasserim). 



One male, Kao Kuap, Krat, December 27, 1929; two females, 

 Kao Lem, Chantabun, December 27 and 29, 1930; one female, Kao 

 Sabap, November 2, 1933. 



A female in the United States National Museum from the upper 

 Tavoy River, Burma, has a bluer throat, more bluish edgings to the 

 feathers of the forehead, and darker and more pronounced malar 

 and postocular stripes; it also is slightly smaller. Wing, 96; culmen, 

 23 mm. 



The two females from Kao Lem measure: Wing, 101-103; culmen, 

 24.5-25.5 mm. The male from Kao Kuap: Wing, 108.5; culmen, 

 25 mm. The female from Kao Sabap: Wing, 97; culmen, 24 mm. 



De Schauensee ^^ took a male at Chantabun, southeastern Siam, 

 April 2, 1933. 



The species ranges from Tenasserim and the northern part of 

 Peninsular Siam to southeastern Siam, Laos, Tonkin, Annam, and 

 Cambodia. It can readily be distinguished frojn the Cyanops asiatica 

 group of forms, with which it has sometimes been confused, b}'- having 



** The birds of the Malay Peninsula, vol. 2, p. 92, 1928. 



ss U. S. Exploring Expedition, vol. 8, p. 133, 1848. 



M Proc. Acad. Nat. Sci. Philadelphia, vol. S6, pp. 4, 255, 1934. 



