PTEROCLID^ 



PTEROCLUBUS 



191 



eggs are brownish-pink, spotted and blotched all over, especially 

 at the thicker end, with a darker shade of the same colour. They 

 measure about 1-37 x '93. 



Eriksson, who found nests later in August, also on the Limpopo, 

 gives a similar account. 



A clutch of two eggs, from about twenty miles north of the 

 Oliphants Kiver in Portuguese East Africa, near the Transvaal 

 border, obtained by Major Sparrow on June 13, agrees well with the 

 description given above, but measure 1*5 X 1*1. 



Genus II. PTEROCLURUS. 



Pteroclurus, Bp. Comptes Bend, xlii, p. 880 (1856) 



Type. 

 ..P. alchata. 



FIG. 61. Tail of Pteroclurus namaqua. x 



This genus only differs from Pterocles in having the two central 

 tail-feathers produced and somewhat attenuated and pointed ; tail 

 of sixteen feathers. 



Five species are 'recognised, spread over Southern Europe and 



