22B 
SENEGAL THICK-KNEE. 
(E dicnemus Senegalensis, Swains. 
Greater wing- covers white, with a broad black band close to 
their tips ; lesser covers greyish-white, with a black line 
down their shafts ; shoulder-covers fulvous, terminated 
by a band of black ; chin and body beneath white, imma- 
culate. 
The Thick-kneed Plovers, like many other natural 
groups, have such a uniformity in their general cast 
of colouring, that it is even difficult to distinguish 
the species, unless by actual comparison ; how much 
more so, when these discriminating marks are ob- 
scurely stated, or entirely overlooked, in the pub- 
lished descriptions and figures. The colouring of 
the birds themselves, indeed, is so very complicated, 
that it is almost impossible, except by long and 
tedious descriptions, to convey any definite idea of 
the markings, stripes, &c. of the feathers. We 
must, therefore, in the present instance, confine 
ourselves to those particulars in which the Senegal 
species differs from the two others to which it is 
most allied, E. crepitans and Capensis. 
General size and aspect, and colour, on the upper 
parts, as the European species, but from which it 
may be thus distinguished. The shoulder- covers 
