XOVITATES ZOOLOOICAE XXV. 1918. 347 



M. aenea insularis : Nicobar Islands. Cf. Baker, Indian Pigeons and 

 Doves, p. 97. 



M. aenea consohrina : Nias Island, Si-oban, Tello and other islands. 



M. aenea oenothorax Salvad. : Engano Island. 



M . aenea habiensis Oberli. : Pulo Babi (Pig Island), north of Nias. 



Ptilinopus rivolii and allies. 



In NoviTATES ZooLOGiCAE, 1901, P. prasinorrhous , hellus, strophitmi, and 

 miqueli have been treated as subspecies of rivolii. It was hardly possible to 

 come to any other conclusion, considering that they do not, so far as we know, 

 occur together, and that P. strophium has sometimes a few purple sjjots, and 

 even a large purple patch on the upper part of the abdomen, if it were not that 

 both P. miqueli and prasinorrhous occur on Jobi Island in the Geelvink Bay. 

 Of miqueli we have, besides a female labelled " lie Jobie " and another labelled 

 Ansus, April 1874, both from the Bruijn collection, which might have been 

 wrongly labelled, a male collected by William Doherty at Marai, Jobi, in April 

 1897, full details as to colours of iris, bill, and feet being given on the label. Of 

 prasinorrhous we have only two males and one female, said to be from Ansus, 

 Jobi Island, 1879, from the Bruijn collection, others from Traitors Island, not 

 far from Jobi, in Geelvmk Bay. If this is absolutely correct, it is a conundrum 

 what to do with these two forms, and to say whether the yellow tinge of 

 the breast-band in strophium or the entu'ely yellow under tail-coverts are the 

 sisecific differentiating character. 



Comparing ten Buru specimens we find that the males differ from typical 

 prasinorrhous (terra typica Key Islands, over 50 specimens compared) in having 

 the under tail-coverts more or less widely margined with yellow, while there 

 are only the very narrowest yellow edges to the under tail-coverts m P. prasi- 

 norrhous prasinorrhous. In the females of C. p. prasinorrhous the edges to the 

 under tail-coverts are wider than in the males, sometimes as wide as ui the 

 males of the Buru form, but the females of the latter have the under tail-coverts 

 still wider bordered or often almost and sometimes entirely yellow. We name 

 the Buru form 



Ptilinopus rivolii buraanus subsp. nov. 



Type : $ ad. GunongFogha, Buru, 24. ii. 1912. No. 1111, Erwui Stresemann 

 leg. 



We have other specimens collected on the mountams by Dumas and H. 

 Kiihn, others from Kayeli, from W. Doherty. 



The subspecies oj Ptilinopus regina. 



There can be no doubt that ewingii and flavicollis are subspecies of P. regina, 

 and that flavicollis is much smaller and must therefore be separated. The 

 form of Cape York is not ewingii, but regina. (Cf. Mathews, B. Austr. i. p. 105, 

 and List B. Austr. p. 12, where the former error has been duly corrected.) 



The forms stand thus as follows : 



