SUDAN BIRDS

10.
n.
Order - - PASSERIFORMES.
Sub-Order OSCINES.
Family ALAUD1DM.
KEY TO SPECIES.f
Wing of ten primaries, the first a
bastard primary ... ... ... 2
Wing of nine primaries only, the
I bastard primary being absent ... CcdaftdreXla brctchydactila, 393.
f Bill long and slender, culmen longer
-< than the middle toe with claw Almmon alaudipes, 388.
(^Bill not abnormally long and slender 3
("Nostrils exposed
\Nostrils hidden by plumelets
... 4
... 11
f Shortest secondary falls short of tip of
| wing by less than the length of the
j tarsus
Shortest secondary falls short of tip
of wing by the length of the tarsus, Pinarocorys eryihropygia, 385.
f With bars on the upper tail-coverts ;
•I wing less than 3.5 inches ... ... 6
l^No bars on upper tail-coverts ... 7
'Upper parts less rufous and very
strongly barred
... Mirafra fischeri, 882.
) Upper parts more rufous and scarcely
ba,rred Mirafra rufocinamomea, 384.
{ .Larger; wing over 3.7 inches
sSmalier ; wing under 3.5 inches
[Tail mostly black, except tlie central
feathers, which are uniform cinnamon-brown
... Mirafra rufa, 383.
Tail dusky brown with sandy edges
to the feathers ... Mirafra africana, 381.
("Rufous on primaries entirely (Tosses
[ a portion of both webs of some of
J the feathers ... ... ... Mirafra cordofatiica, 380.
| Rufous on primaries never crosses the
] inner webs and very seldom the
[ outer webs ... ... ... ... 10
Tail with the shafts of the penultimate
feathers dark and the white pattern
j smaller ... ... ... ... Mirafra canlillans, 378.
") Tail with the shafts of the penultimate
feathers white and the white pattern
larger... ... ... ... ... Mirafra alhicauda, 379.
fSexes extremely dissimilar in colourj
ing; bill finch-like 12
Sexes alike in plumage; bill not
finch-like 13
f—After Shelley, " Birds of Africa."
13