125 Vol. xvi.] 



mounting it. The bird was perfectly fresh. This species is 

 the western form of the Black-throated Wheatear, and 

 may be distinguished from the eastern form 8. melanoleuca 

 in having less black on the throat, more buff on the breast 

 and back, and no frontal band of black." 



Captain Gr. E. Shelley described the following new 

 species from a collection of birds obtained in Gazaland 

 by Mr. Swynnerton : — 



Erttheacus swtnnertoni, sp. n. 



Adult male. Head and neck deep grey, slightly darker 

 on the crown and down the centre of the throat, which 

 eniis in a large patch of white entirely surrounded with 

 black ; back and scapulars yellowish-brown ; wings 

 rounded and, lil?e the entire tail, deep grey ; inner webs 

 of quills dusky blackish, with whitish margins ; inner 

 half of the under wing-coverts rufous-shaded yellow like 

 the axillaries ; chest and sides of body slightly darker 

 rufous-shaded yellow separated from the white base of 

 the throat by a narrow jet-black band ; middle of abdomen 

 and under tail-coverts fading into white ; thighs grey, 

 white towards the tarsi. Iris brown ; bill black ; legs 

 pinkish-grey. Total length (in the flesh) 5'5 inches, 

 culmen 0*55, wing 2*75, tail 1*9, tarsus 1*05. 



Adult female. Differs in having a shade of olive on the 

 crown, back of the neck, wings and middle tail-feathers. 

 Iris brown; bill black; legs pinkish grey. Wing 2' 7. 



Immature. Differs in having the forehead and crown 

 dark brown, with small sub-terminal rufous spots on the 

 feathers ; remainder of the head and hinder half of the neck 

 paler and greyer, with similar but rather larger rufous 

 spots ; throat fading into white on the middle third, and 

 then deepening into a dark rufous-brown collar next to the 

 crop ; some of the feathers of the fore-mantle and median 

 wing-coverts with rather larger rufous spots ; outer edges 

 of quills brownish. Iris sepia, darker than in the 

 adults ; bill dusky brown, paler at the base ; legs 

 white, with a purplish tinge on the tarsus and knee-joint. 

 Total length (in the flesh) 5-3. 



Hah. Chirinda Forest, June 17th, 1905. 



