1872.] 



ON THE BIRDS OF CELEBES. 



155 



they suggested a new generic title, Alectorops, for the reception of Cnculus jW'^'^^ocephalus, 

 Forster. But as Forster's Ceylon Malkoha is the type of P/uenicojjJiaes, this arrangement cannot 



be recognized. 



Dr. Cabanis (Mus. Hein. iv. p. 85), concurring in tlie propriety of separating the Ceylon 

 species from the others, retained it, Vieillot's type species, in Phoenicopliaes, and proposed 

 Rhamphococcyx for the small Indo-Malayan group. The grounds for this separation are the 

 great extent of naked space surrounding tlie eye, the abnormal colouring of the plumao-e, the 

 form of the bill, and the position and shape of the nostrils in P. purrltoeepluilus. The naked 

 space is certainly more extended than in P. curvirostn's or P. ertjtltrognathus; but then P. 

 calorhynchus has the ophthalmic region almost entirely clothed. The colouring of the plumage 

 differs principally in that white replaces the rufous of P. curvirostris and P. erythrocjnathus, thus 

 evincing an affinity to Ehopodytes, Cab. {Zanclostomus of Indian authors, but not of Swainson). 

 The tail is tipped with white instead of rufous ; but the upper plumage in all three is freen. 

 In P. calorhjnclms green is entirely absent, and the tail is uniform in colour. In colouring 

 P. calorhynchus is as much an isolated species as P. pyrrhocephalus. The form of the bill in all 

 four species is very similar ; but the position and shape of the nostrils is different in each of the 

 four. The nostril of P. pyrrhocephalus (fig. 8) is placed in a narrow, depressed, lengthened, 



Fig. 5. 



Kg. 6. 



\ 



-m 



Phoenicophaes calorhynchus. 



Phoenicophaeis carvirostrU. 



Fig. 7. 



Fig. 8. 



«t* 



Phoenicophaes erythrognathus. 



PhMnicophaes pyrrhoceplialus. 



oval slit, which runs almost parallel with the commissure, yet slightly descending. Its situation 

 is almost on the edge of the commissure, and at an unusual distance from the base of the 



