10. DRTOSCOPUS. 231 



With transverse scales Feathers of the back and rump extremely 

 flufty and, like the underparts of the body, generaUy white; rest of 

 the plumage black, sometimes with an additional ochraceous tin-e 

 A either red, green blue, or yellow in the plumage, which is alile 



tips of the tail-feathers is very variable and of no safe specific value 

 liancfe. About 22 species confined to Africa. 



Ji^ei/ to the Sj}ecies. 



a. Under surface of body black or blackish like 



rest of the body. 

 a'. Eump and lower back uniform dull black 

 without any white spots. ' 



a". General coloui' dull black with a brown 



b". GSalcolour-slatyblackwithabiuishl '^"^^'■^^-^'-' P- 132. 



S^'^J tiDge nifferrimm, p. 133 



6 . Runip and lower back slaty grey, mottled > i ^^■ 



witli large white subterminal spots 



d T\ mg 3 mches lugubris, p. 133 



b. Under surface of body white, fawn-colour or 



gi-ey. ' 



c'. Head chestnut-colour hke the throat and 



,, J*^'T*i • • ■ ■, Vi hiehderi, p. 134 



a . Head glossy black. ' ^ 



^','; 'S^'J, ^^y ^i"^;*^ the mantle and back .... angohnsis, p. 134 

 / . 1 au deep black. ; 1 • -^ -■'*• 



a'". Lower back black, mottled with con- 

 cealed subterminal spots of gi'eyish 

 white. 

 «*. Some of the wing-coverts always 

 broadly edged with white. 

 a'. Secondary quills internally mar- 

 gined with white; abdomen and 

 under tail -coverts fawn -buff'; 



breast creamy white I rujiventris, p. 1.34. 



b\ Quills internally withoutany lighter i^^^cturus, p. 136. 

 margin. 

 a^. Body below pure white. 



a\ Quills entirely black hicohr, p. 138. 



. iwo or three secondaries ex- 

 ternally broadly margined 

 with white, foriining a con- , 



spicuous bar J '>najoi\ p. 136. 



6". Body below with a strong rosy ' 9»fMt(s, p. 137. 

 ,, ,^,. ^'"g'e; quills entirely blac\ . . cethiojncus, p. 139 

 6*. W mg-coverts and scapulars entirely 

 black ; quills without any white 

 edges. 

 c'. Body below rosy isabelline : larger turatii, p. 140. 

 d^ Body below isabeiime : smaller . . suUacteus, p. 140. 



k2 



