266 Mr. J. H. Gurney on Cooperastur and Urospizias. 



from Timor, in which these coverts are given as white, trans- 

 versely barred with rufous; this female appears to be in 

 full adult dress, with the exception of the tail, on which a 

 brown tint appears in the coloured figure, and may perhaps 

 indicate the remains of immaturity. 



TemmincVs figure of an adult of this species in the 

 PL Col. pi. 43, represents the under tail-coverts as white 

 and unbarred : the locality whence the specimen drawn was 

 obtained is not mentioned; but it would seem to have been 

 an example preserved in the Paris Museum, according to 

 the rule quoted in 'The Ibis' for 1879, p. 339 (footnote). 

 Count Salvadori states that TemmincVs type specimen was 

 from Timor, and is preserved at Leyden {vide Ibis, 1879, 

 p. 319, and ' Ornitologia della Papuasia e delle Molucche/ 

 vol. i. p. 62). 



Further investigation is desirable as to whether there is 

 a constant difference, as regards adult birds, in the coloration 

 of the under tail-coverts, between the northern and southern 

 races of Urospizias torquatus ; and if such a diff"erence is 

 established, the latter should be distinguished as U. sharpei 

 (Ramsay^). 



I may here observe that Count Salvadori, both in his ' Pro- 

 dromus ' and in his larger work, appears to omit all mention 

 of the peculiar Flores Hawk, Urospizias sylvestris (Wallace) , 

 either as a distinct species or as a synonym of U. torquatus ; 

 but he speaks of U. torquatus as having been brought from 

 Flores by Mr. Wallace. I have never seen a bird which ap- 

 peared to me to be referable to the true U. torquatus from 

 that island ; and a pair of U. sylvestris from thence which 

 are preserved in the Norwich Museum, seem to me to be 

 readily distinguishable from U. torquatus by their much 

 smller size ; they measure as under : — 



Wing. Tarsus. Middle toe s. u. 



in. in. in. 



6 7-30 2-0 1-05 



$ 8-20 2-10 1-30 



• Vide Proc. Linn. Soc. New S. Wales, vol. iii. pp. 173, 248. 



