22. LiNius. 267 



the iindcrparts, except the abdomen and under tail-coverts, greyish 

 which colour is produced hy the minute transverse vermiculations. 

 The chestnut-coloured spot on the flanks as in L. collaris, but the 

 loral feathers and some feathers above the eye are whitish. Culmen 

 0-8 inch, wing 3-8, tail 4-35, tarsus 1-05. 



Two white feathers just in the middle of the forehead support 

 the opinion that this specimen is a hybrid between L. collaris and 

 the true Namaqua bird. 



B. Eastern Race (L. humeralisj. 



Adult male. Distribution of colour very similar to that in 

 L. collaris. The birds from Eastern Africa, from Abyssinia to 

 Natal, are generally darker above than L. collaris, old males showin* 

 a slight glossy shine on the head, neck, tail, and wiug-covcrts ; 

 greater part of scapulars pure white, forming a very conspicuous 

 large shoulder-patch; rump and upper tail- coverts grey; all the 

 underparts pure white,with the exception of the axillaries and most of 

 the under wing-coverts, which are blackish, or only bordered with 

 white on the outer web ; iris dark brown ; bill and feet black. 



Adult female. Like the male in colour and size, but, as in the female 

 of L. collaris, showing a chestnut spot on the sides above the thighs. 



The young bird in first plumage is very similar to the young of 

 L. collaris of the same age ; but the underparts, especially the abdo- 

 men and lower breast, are whiter and less cross-barred. 



Ohs. One adult male from Natal and one female from Maritzburo- 

 appear to be almost pure white underneath ; but on very careful 

 examination they show on the breast very faint and narrow greyish 

 cross markings, which give a very slight greyish tinge to the white 

 breast. Another male from Durban, however, has the underparts 

 pure white. 



Hah. Eastern Africa, from Abyssinia to Natal. 



The birds described as L. humeralis and L. collaris are to be 

 looked upon as only one species, represented in the eastern part of 

 Africa, from Abyssinia to Natal, by a slightly smaller and more 

 brightly coloured form, and in the western region, from the Congo 

 river to the Cape, by a more greyish and rather larger race. In 

 Natal both these forms run into each other as regards colour and in 

 size. 



a. L. collaris. 



a. Ad. sk. South Africa, J. Gould, Esq. [C.]. 



b. [$] ad. sk. South Africa. J. Gould, Esq. [0.]. 

 VOL. vin. 8 



