DUTCH BORNEO-EXPEDITION. 159 



22. Cyanops mystacoplianos. 



Bucco mystacoplianos Temm. PI. Col. Ill, N°. 315 (1824). 

 Chotorea mystacophanus Salvad. Ucc. Born. p. 34, pi. 1. 

 Megalaema mystacophanus Goffin, Mua. P. B. Buccones, p. 18; 



Everett, L. B. Born. p. 167. 

 Megalaema mystacophanes Sharpe, Ibis 1890, p. 4. 

 Cyanops mystacophanes Shelley, Cat. Birds Br. Mus. XIX, p. 72. 



Nineteen adult males and thirteen females from Sanggau, 

 Roeraa Mauoeal, Mounts Kenepai and Liang Koeboeng, 

 Nanga Raoen and Poelau and thirteen from Long Bloe (Upper 

 Mahakkara). — Iris dark brown, eyelid olive-green, bill 

 entirely black in the males, black with the base of lower man- 

 dible greenish white in the female; feet dirty olive-green. — 

 Contents of stomach : rests of the fruits of Urostigma. 



Hab. Malay Peninsula, Sumatra and Borneo. 



The question whether the adult females are similar in 

 color to the adult males or not, has hitherto never satisfac- 

 torily been settled, though the species is very common in 

 the forest-regions of the above mentioned countries. 



Goffin (1. c.) considers the adult female to be of the 

 same color as the adult male, but this opinion is solely 

 based upon a specimen collected by Schwaner and mentioned 

 as a female, while there are strong reasons to consider it 

 an adult male. 



Salvadori (1. c.) does not share the opinion of Goffin 's, 

 the collections of Doria and Beccari containing not a 

 single specimen in full color (i. e. with golden yellow 

 fore-head) sexed by the collectors as a female. 



Shelley (1. c.) on the contrary, says that the adult female 

 does not differ from the adult male, but amongst the 

 numerous specimens enumerated in the Catalogue, there is 

 only a single female (specimen c') mentioned as adult, 

 thus with yellow fore-head, while all the other numerous 

 authentical females are considered to be immature. 



The mentioned two » females" in the Leyden- and in 

 British Museum are, in fact, the only specimens in full 

 color which are mentioned to be females, while in littera- 



Notes from the Leyden. üMuseiim, Vol. X.XI. 



