340 TWO CENTENARIES AND A QUARTER 



1 74. Tachydromus Bu7'chellii. 



Front and fore part of the head rufous ; hinder part 

 and nape cinereous : crown bordered (behind the eye) 

 with a pointed white collar, margined by black : upper 

 plumage fawn colour : rump cinereous. Wings even 

 with the tail. 



Inhabits South Africa. Dr. Burchell's Coll. No. 155. 



Intermediate in size between T. Semgalensis Lich. and 

 Asiaticus. Total length about 8 inches ; bill, gape l-jL ; front 

 •^ ; wings 5y^5; tail, base2f5; tarsus 1-^. General colours of 

 Senegalensis, but with the following differences ; — The back has 

 a greater tinge of rufous ; and the termination of this colour, 

 below the breast, is simply marked by a blackish shade : the 

 secondary quills are bght brown, and are all of them broadly 

 tipt with white : the throat, breast, and middle of the body are 

 of the same tinge as the back : the tail is cinereous ; the outer- 

 most feather white, the base obliquely brown on its inner web 

 only ; the two next feathers cinereous, with a black bar and 

 white tip ; and the rest cinereous, more or less tipt with black 

 only. The young bird is variegated with brown lines and 

 light spots. Is this latter the Erolia (!) variegata shortly noticed 

 by Vieillot? 



175c Rhyncops melanurus. 



Above, black : lesser quills tipt with white : tail 

 brownish black ; each feather margined externally with 

 white : base of the bill, and feet, red. 



Inhabits the coast of Demerara. Mr. Schomburgh. 



Total length about 16 inches; bill (the under mandible 

 from the gape) 2,^^; wings 14, three inches longer than the 

 tail ; tail, base 5; depth of the fork 1-^; tarsus 1-^. Larger 

 than the R. borealis {niger Auct.}. 



176. Falco cucullatus. 



Upper plumage, and the whole of the head, except 

 the middle of the chin, cinereous black : chin, throat, 

 and breast, cream colour: body, beneath, black, with 

 transverse white lines : belly, vent, and thighs, rufous. 



Inhabits Brazil, Trinidad, &c. Mus. Nost, 



Total length 9^ inches ; wings 7^, equal with the tail ; tail 

 from the base 4; tarsus 1: middle toe and claw U; inner 



