22 MR. A. R. WALLACE ON THE BIRDS OF BOURU. [Jan. 13, 



ACCIPITER CRUENTUS. 



Astur cruentus, Gould, Birds of Austr. i. pi. 18. 

 Hab. Bouru and Timor. 



Athene hantu. 



Rufa, supra rufo-lrunnea ; gula pallidiore ; fronte genisque al- 

 bescentibus ; corpora subtus, cum cauda, rufescente et albescente 

 indistinctissime fasciato ; tectricibus alarum inferioribus rufis; 

 remigibus fuscis, pogonio externo rufo ; digitis tarsisque setu- 

 losis. 

 Above dark, beneath bright rufous ; tail with very indistinct, nar- 

 row, paler bars ; forehead, cheeks, and chin whitish ; under surface 

 indistinctly banded with narrow fasciae of darker and lighter rufous 

 or whitish ; the under tail-coverts barred with rufous and whitish ; 

 quills not barred, except close to their bases ; under wing-coverts 

 rufous, not barred ; third, fourth, and fifth quills equal ; tarsi and 

 toes densely clothed with bristles ; bill whitish horn-colour ; iris 

 yellow ; feet (in the living bird) white. 



Length 12 inches; wing 8f inches; tail 5 inches. 

 This species resembles A. squamipila, Bp., in its hairy tarsi, but 

 differs in its coloration and proportions ; it is one of the " burong 

 hantus" (ghost-birds) of the natives. 

 Hab. Bouru. 



Scops leucospiltjs. 



Ephialtes leucospila, G. R. Gray, P. Z. S. 1860, p. 344. 



Hab. Bouru and Gilolo. 



Caprimulgus macrourus. 



C. macrourus, Horsf. Linn. Trans, xiii. p. 142. 



Hab. Bouru and the whole archipelago. 



Dendrochelidon mystaceus. 



Cypselus mystaceus, Less. Voy. Coquille, Ois. t. 22. 



Hab. Bouru, Moluccas, and New Guinea. 



Remark, — This is the limit of the range of this fine Tree-Swift to 

 the westward. In the Sula Islands and Celebes it is replaced by 

 D. wallacii, Gould. 



Cacomantis assimilis. 



Cuculus assimilis, G. R. Gray, P. Z. S. 18.')8, p. 184. 



Hab. Bouru. 



This specimen seems to agree with that named and described as 



bird to be a very good species, I should at once have adopted Professor Schlegel's 

 name ceramensis, had I not obtained the bird in other localities than Ceram. The 

 Raptores having so generally an extensive range renders the application of terri- 

 torial specific names less advisable in their case than in that of the Passeres. My 

 own rule is only to apply the name of a country as specific name when the sur- 

 rounding districts are known to possess their peculiar representative species, in 

 which case it amounts almost to a certainty that the new bird is similarly restricted 

 in range. 



