Birds from Somaliland. 523 



70. Melierax gabar (Daurl.). 

 74. c? . Eil Dab, Dec. 23, 1903. 



Small, measuring : — Wing 173, tail 155, tarsus 42, and 

 culmen 16 mm. 



71. Prancolinus spilogaster Salvacl. 

 No label. ? Upper Sheikh. 



72. Acryllium vulturinum (Hardw.). 

 Unnumbered, d . Galkayu, April 3, 1903. 



73. Pteroclurus exustus (Temm.). 



29 & 29. S ? • Galkayu, April 3, 1903. 



No label [ ? . ? same place and date] . 



The yellow in these specimens is of a very rich and deep 

 shade, and so also is that in the specimens of the two 

 following species. I have not referred these birds to P. e. 

 somalicus Hartert, because it seems to me that the colour of 

 these Sand-Grouse varies according to the colour of the desert 

 which the birds inhabit ; and there being apparently similarly 

 coloured deserts in regions remote from each other, there 

 are similarly coloured Sand-Grouse in those regions. At 

 least I think this a possible explanation of the difficulty of 

 dividing these birds, which vary so much in shades of colour, 

 into satisfactory geographical races. 



74. PrERocLURUs senegallus (Linn.). 



133. S • \E1 Afweena, Wasangali Country, March 16, 

 133a. <J.J 1904. 



75. Pterocles lichtensteinii Temm. 

 Two males without labels. 



76. LoPHOTIS GINDIANA (Oust.). 



20. S ■ Dibbit, March 11, 1903. 



25. ? . Dibbit, March 23, 1903. 



Rather small, measuring : — 



20. Wing 9*3, tail 5, tarsus 3, culmen 1*4 inches. 



25. „ 8-8, „ 4-9, „ 2-6, „ 14 „ 



77. Heterotetrax humilis (Blyth). 

 116. <$. Olesan, Feb. 16, 1901. 



