254 grous. 



head, and nape, they are short dashes or streaks, but all round the 

 lower part of the neck and breast, back, and rump, the spots are 

 nearly round, and as big as small tares; lesser wing coverts marked 

 much the same, but on the greater the spots are transverse, and 

 approach to crescents ; the same on the second quills ; the greater 

 are mottled cream-colour on the inner webs and tips, on the outer 

 black, but several of the exterior ones are not black, being only 

 speckled minutely with black on the outer webs ; the shafts of all 

 black ; the tail is cuneiform, and the feathers more or less pointed ; 

 the two middle ones exceed the rest in proportion, and a little barred 

 on each side of the shaft; the others black for some way near the 

 end, but all tipped with white ; the tail coverts reach to within one 

 inch of the end of the tail ; round the chin and throat the feathers 

 are yellow buff, extending beneath the eye, and beyond it; all 

 beneath, from the breast, the belly, vent, and thighs pale buff; on 

 the middle of the belly a patch of black ; the legs are feathered 

 before to the toes, behind smooth and dusky ; the toes are also 

 without feathers, and dusky; at the back, above the heel, a blunt 

 knob, serving the place of a back toe, but without a spur ; the wings 

 long, and reach three-fourths at least on the tail. 



A specimen of the above bird was in the collection of General 

 Davies, who informed me that he had it from Egypt, under the name 

 of the Libyan Partridge ; said to frequent that Desert in great 

 numbers, the ground being sandy, and the colour of the plumage 

 favouring the bird, it is not at all times to be discovered. 



21— SAND GROUS. 



Tetrao arenarius, Ind. Orn. ii. 642. Gm. Lin. i. 755. N. C. Petr. xix. p. 418. t. 8. 



Pall, reise, iii. 699. 

 Tetrao subtridactyla, Hasselq. It. 250. 



Pterocles arenarius, Temm. Man. 299. Id. Ed. ii. 477. Id. Pig. Sf Gall. 8vo. iii. 240. 

 Gelinotte des Sables, Son. Buf. vi. p. 82. 



