BLOOD PARTRIDGES 



KEY TO ITHAGENES 

 I. Lower breast green (males). 



a Longer median wing-coverts green. 

 a' Throat crimson. 



a" Ear-coverts wholly black kuseri. 



b" Ear-coverts not wholly black. 



a^ Lores crimson .......... tibetanus. 



b^ Lores black. 



a^ Breast spotted with crimson cruentus cruentus. 



b'^ Breast plain or stained with rusty „ affinis. 



b' Throat grey. 



c" Larger, wing averaging 215 mm geoffroyi. 



d" Smaller, wing averaging 170 mm. wilsoni. 



b Longer median wing-coverts not green. 

 c' Dorsal plumage with little or no green. 



e" Wing-coverts golden yellow ........ sinensis sinensis. 



f" Wing-coverts cinnamon or chestnut ...... „ berezowskii. 



d' Dorsal plumage decidedly green ....... „ michaelis. 



n. Lower breast not green (females). 

 a Sides of neck cinnamon. 



a' General plumage brown . kuseri. 



b' General plumage rufous-brown. 



a" Warmer in tone ; a crimson wash on throat .... cruentus cruentus. 



b" Greyer in tone ; crimson wash on throat very faint or absent . „ affinis. 



b Sides of neck grey. 



c' Breast vermiculated with blackish brown geoffroyi. 



d' Breast not vermiculated with blackish brown. 



c" Darker and smaller ; wing 190-199 ...... sinensis sinensis. 



d" Paler and larger ; wing 203-210 . „ michaelis. 



c Sides of neck brownish „ berezowskii. 



While I have separated the Himalayan Blood Partridge into two subspecific forms, 

 the distinction, in this case, is of interest chiefly to the student of geographical and 

 pigmental variation. As the birds are identical in habits, I have treated them together, 

 except as regards synonomy and subspecific description. 



