AVES. 365 



and therefore belongs probably to this race. The tail is 

 a little shorter, very much more rounded, and the rec- 

 trices are of rather different shape, being more pointed. 

 In P. pastor the central rectrices are only white at the 

 extreme base, and on the outermost pair nearly 1^ in. at 

 the end is black ; whilst in the specimen from Annesley 

 Bay the white on the base of the central rectrices extends 

 nearly to the end of the coverts, and on all the outer 

 rectrices only about f in. at the end is black. The junc- 

 tion of black and white is zigzagged, the black running to 

 a point up the quill and the inner margin, the white ex- 

 tending further down on the outer margin and the centre 

 of the inner web. The middle rectrices are 0'2 in. longer 

 than the outer ones. The bill appears to be very slightly 

 more slender. I can see no other differences. The 

 measurements are : — 



Wing. .Tail. Tarsus. Bill, 



in. in. in. in. 



2-85 1-97 0-9 0-42 



140. P. semitorquata, Heugl. (Plate V.). 



Joum. f. Orn. 1869, p. 166, et Om. N. 0. Afr. p. 341. 



I had named and described this bird at a meeting of 

 the Zoological Society of London when Von Heuglin's 

 description appeared in the " Journal fur Ornithologie." 

 He is only acquainted with the male ; I therefore append 

 a description and figure of both sexes : — 



Mas. niger, macula subquadrata collari laterali, fascia 

 atari longitudinali ex remigibus secundariis ultimis 

 cum earum tectricihus compositd, abdomine toto cum 

 hypochondriis uropygioque alhis ; rostro pedibusque 



