THE SUMATRAN GREEN-BILLED MALKOHA. 123 



Mergui southwards. It extends down the Malay peninsula and it occurs 

 in Sumatra and in Cochin China. It is also said to have been met with 

 in Java. 



Mr. Davison, who observed this Malkoha in Tenasserim and other 

 places, says : ee In its habits and notes this species resembles R. tristis ; 

 but I have occasionally found it in the evergreen forests of the Pakchan. 

 I found it common everywhere in the Malay peninsula and shot many, but 

 noticed nothing distinctive in its habits, food or voice. " 



Genus POLIOCOCCYX, Sharpe. 



506. POLIOCOCCYX SUMATRANUS. 

 THE SUMATRAN GREEN-BILLED MALKOHA. 



Cuculus sumatranus, Raffl. Trans. Linn. Soc. xiii. p. 287. Rhopodytes suma- 

 tranus, Sakad. Ucc. Born. p. 73; Hume $ Dav. 8. F. vi. p. 164; Hume, S. F. 

 viii. p. 89 ; Kelham, Ibis, 1881, p. 393. 



Description. Male and female. Like R. diardi, but with the centre of 

 the abdomen, vent and under tail- coverts deep chestnut ; the facial skin is 

 bordered above by a very narrow white band, and it is also considerably 

 larger. 



Legs and feet plumbeous green ; bill pale green ; bare orbital space 

 clear orange, palest round the eye, shading to blood-red at the posterior 

 angle. (Davison.) 



Length 16 inches, tail 9, wing 6'2, tarsus 1'5, bill from gape 1*5. The 

 female is of about the same size. 



The Sumatran Green-billed Malkoha has been found in Tenasserim by 

 Mr. Davison. He says : " In the secondary scrub, with which a great 

 portion of the island of Mergui is covered, this species was quite a 

 common bird. To the north of Mergui I did not meet with it at all, and 

 to the south but seldom, although I met with many places that appeared 

 to me quite as suitable as the places it frequented on the island of 

 Mergui." 



It extends through the Malay peninsula and inhabits Sumatra, Bangka, 

 Java and Borneo. 



Mr. Davison remarks that the habits of this species are precisely like those 

 of R. tristis. Lieut. Kelham found the nest near Perak on the 16th of March. 

 He says : " The nest was a loosely-put-together structure of dry twigs, 

 slightly cup-shaped, and built at about 5 feet from the ground, in a bush 

 standing on the edge of a jungle-path. The eggs, two in number, were 



