218 
53. W. Ploceus sanguinirostris (Linn.). 
54. W. Pyromelana ignicolor (Yieill.). 
55. AY. Vidua paradisea (Linn.). The series of immature speci¬ 
mens in the collection have enabled me to detect a curious structure 
connected with the development of the tail-feathers, which will be 
treated of in a separate paper. See Sir AY. Jardine’s ‘ Contributions 
to Ornithology/ 1850, p. 88. pi. 59. 
56. AY. Vidua principalis (Linn.). The specimen from Kordofan, 
like those from Senegal, has a black spot on the chin, but it is not 
yet proved whether the presence of this spot amounts to a specific 
distinction. 
57. AY. Pytelia elegans (Gm.). 
58. AY. Amadina fasciata ( Gm.). (Fringilla detruncata, Licht.) 
59. AY. Amadina cardans (Gm.). A perfectly typical Amadina, 
though M. Riippell makes it an Estrilda. 
60. AY. Philetcerus nitens (Gm.). ( Amadina nitens , Sw.) From 
the peculiar form of the beak I am disposed to refer this species, as 
well as Estrilda squamifrons , Smith, E. musica , Gray, and Loxia 
frontalis , Baud., to the genus Philetcerus. 
61. Crithagra lutea (Licht.), Temm. PI. Col. 365. 
62. AY. Passer simplex , Licht. ( Pyrgita swainsoni, Rupp.) 
63. Emberiza striolata, Riipp. 
64. Galerida cristata (Linn.)? This is probably the bird so desig¬ 
nated by Riippell, who states it to he abundant in the whole of N. 
Africa. It precisely agrees with European specimens in form, but is 
of a much paler colour, which however may he easily explained by 
the bleaching effect of the sun’s rays in the scorching deserts which 
this bird frequents. 
65. N. Mirafra cordofanica, Strickland, n. s. Above fer¬ 
ruginous, the feathers of the crown and back with an indistinct 
medial dusky streak, and margined on their inner side with rusty 
white ; tertials broadly margined with whitish, that colour being sepa¬ 
rated from the ferruginous of the medial portion by a narrow dusky 
line ; secondaries ferruginous, margined externally with whitish ; pri¬ 
maries ferruginous at the base, their distal half being pale rufo-fus- 
cous; medial pair of rectrices ferruginous, the next pair pale rufo- 
fuscous, the two following pairs deep fuscous, with a very narrow 
rufescent margin, the penultimate pair deep fuscous internally; the 
external web, and part of the inner at the tip, white; external pair 
white, the inner web fuscous towards the base; cheeks pale rufo- 
fuscous, chin and throat white, breast and lower parts pale cream- 
colour, the former with a few pale rufo-fuscous subtriangular spots ; 
lower wing-covers and sides rufescent; beak, feet and claws pale yel¬ 
lowish. (Aves, PI. XXIII.) 
Total length, 5|- inches ; beak to front, to gape, fo ; wing, 3 t 2 q- ; 
medial and external rectrices, 2^; tarsus, t 9 q- ; middle toe and claw, 
y’q ; hind toe, ~; hind claw, t 2 q-. 
This, which seems to be a typical Mirafra , is remarkable for the 
predominance of a pure ferruginous tint on its upper parts. The hind 
