10 Mr. Alfred R. Wallace on lae 



9. AcciPiTER ^QUATORiALis, Wall.^ P. Z. S. 1865, p. 474; 

 Ert/throspiza griseogularis (pt.), Kaup, P. Z. S. 1867, p. 174; 

 tAstur henicogrammus, G. R. Gray, P. Z. S. 1860, p. 343, jW. 



Bill black ; cere, eyelids, and feet orange-yellow ; iris golden 

 orange-yellow. 



Hab. Batchian, Gilolo, Morty Is., Waigiou, Salwatty {Wall.). 



Four specimens in my collection show this to be a much 

 smaller bird than A. griseogularis. The tail only varies from 6 

 to 7"25 in. and the wing from 7*75 to in., so that the longest 

 is considerably less than the shortest of the other form. The 

 tarsus is 2*2 to 2'25 in., and is therefore always neai'ly '5 in. 

 shorter; the bill, measured as before, is '7 as compared with '85, 

 and its height '45 compared with '5 or 'SS. Dr. Kaup says 

 that I established this species " on a middle-aged bird.'' But I 

 am not aware that the age of adult birds changes the dimensions 

 of the bill and tarsus to this extent ; and if it did it would be 

 very extraordinary that a series of twelve specimens could be 

 divided into two groups offering such constant differences as 

 these do. This species sometimes very closely resembles my 

 Timor specimens of A. torquatus; but in A. (Squatorialis the 5th 

 primary is the longest, while in A. torquatus it is always much 

 shorter than the 4th. In my original description of this species, 

 the larger series of dimensions given were from a specimen 

 which I have since determined to belong to A. griseogularis ; so 

 that the contrast in size between the two species is more marked 

 than it then appeared. 



[Uraspiza, Kaup.) 



10. AcciPiTER SULAENSTS (Schlcg.) ; Nisus sulaeusis, Schleg., 

 Valkv. Nederl. Ind. pi. xvi. fig. 3,4; Uraspiza sulaensis, Kaup, 

 P. Z. S. 1867, p. 176. 



Hab. Sula Islands, Ceram ? [Mus. Lugd.). 



11. AcciPiTER sYLVESTRis, Wall., P. Z. S. 1863, p. 487; 

 Uraspiza torquata (pt.), Kaup, P. Z. S. 1867, p. 176. 



Hab. Floras {Wallace). 



Bill black ; cere and feet yellow. Third and fourth primaries 

 nearly equal, the third longest ; tail with eight or nine bands. 

 Length 12*5 to 13*5 in., wing 7 to 8 in., tail 5-5 to 6-25 in. 



