304 Mr. .). H. (kinicy's Notes on 



beautiful specimen from Borneo. Perhaps the nearest ap- 

 proach to this Borneau specimen, of any that I have ex- 

 amined, both as regards its dark upper surface and its rich 

 rufous tints l)elo\v, is an adult female from New Caledonia in 

 the collection of Canon Tristram. 



F. melunogenys is always more or less characterized, when 

 adnlt, l)y the jireat regularity of the transverse barring of the 

 under surface, combined with a conspicuous narrowness of 

 the dark transverse bars, which are, nevertheless, strongly 

 marked and deeply coloured, and usually rather closer toge- 

 ther than in F.pef'egrinus ; these characteristics are, however, 

 more decidedly developed in some individuals than in others. 



F. melanogenys is a somewhat smaller Falcon than F. pere- 

 grinus, in illustration of which I may here insert some, 

 measurements, all taken, with the exception of those of the 

 Bornean example, from specimens preserved in the Norwich 

 Museum. 



Males. 



Wing. Tarsus. Middle toe s.m. 



Ooe adult aud one immatiu'e, 



both from Australia 11-G5 1-5.5 l-OO 



Adult, Sydney 1200 1-50 1-80 



Immature, Port Curtis, Queens- 

 land 11-75 1-70 1-90 



Females. 



Adult, Australia 13-25 2-00 2-20 



Do., Sydney 13-40 1-90 2-20 



Do., Moreton Bay, Queensland.. 13-50 1-80 2-10 



Do., Lawas River, Borneo .... 13-20 2-00 2-20 



Immature, Philippines 1370 200 2-20 



There are, as it appears to me, three races of small Falcons 

 existing on the continent of Africa, though not entirely 

 limited to it, closely related to Falco peregrinus, and still 

 more closely so to each other. To these Falcons I propose 

 now to refer; and as they somewhat differ from each other 

 in size, and especially in the dimensions of the female sex, 

 I propose to consider them seriatim in that respect, be- 

 ginning with the species in which the females are the 



