DUTCH BORNEO-EXPEDITION. 169 



The genus Pentlwceryx is closely allied to Cacomantis^ 

 but differs from it in having the barrings on the tail, as 

 far as they are present, always placed transversely, i. e. in 

 a right angle to the shaft, while in all the species of 

 Cacomantis the barrings on the tail-feathers, as far as they 

 are present, are placed obliquely, which character it has 

 in common with the square-tailed genus Surniculus. 



As to the identity of the species pravatus with Sonnerafi, 

 I cannot agree with the view of Shelley's, and prefer to 

 keep both species separate. P. Sonnerafi is a much larger 

 bird than F. pravatus, its wing measuring 5 inches, while 

 in the Malayan birds (P. pravatus) the largest specimen 

 at hand measures but 4,3 inches. 



45. Cacomantis meruUnus. 



Cuculua merulinus Scop. Del. Flor. et Faun. Insubr. II, p. 89(1786). 

 Cacomantis vierulinus Salvad. Ucc. Born. p. 64; Everett, L. B. Born, 

 p. 172; Sharpe, Ibis 1890, p. 10. 



An adult and a youug female from Banjok, a Dyak village 

 near the great falls of the Mahakkam River (Dr. Nieu- 

 wenhuis). — Iris pale ochraceous , bill dark gray, feet 

 gray. 



Hab. South-eastern Asia through the Malay Peninsula 

 and the whole Malay Archipelago. 



46. Hierococcyx fugax. 



Cuculus fugax Horsf. Trans. Linn. Soc. XIII, p. 178 (1822). 

 Hierococajx fugax Salvad. Ucc. Born. p. 65; Everett, L. B. Born, 

 p. 171; Sharpe, Ibis 1890, p. 10. 



An immature male from Mount Kenepai, and three 

 males and two females from the Upper Mahakkam. — 

 Iris chestnut encircled with white, bill black, lower mandible 

 at the base, nostrils and eyelid chrome-yellow, feet sulphur- 

 yellow. Males and females quite similar. 



Hab. Whole eastern Asia, Malay Peninsula, Sumatra, 

 Java, Borneo and the Philippines. 



Notes from, the Leyden Museum, Vol. XXI. 



