220 
F. riippelli ; but the specimens from Kordofan seem to agree equally 
well with Riippell’s plate of F. riippelli and with Gray’s plate of what 
he regards as the true clappertoni, between which I can see no dif- 
ference. 
78. Coturnix dactylisonans. 
79. N. W. Pterocles quadricinctus,Temm. (P. tricinctus, Sw.) 
This African species has long been confounded with the closely allied 
P. fasciatus (Scop.), (Perdix indica, Lath.), of India, figured by 
Mr. Jerdon in his ‘Illustrations of Indian Ornithology,’ pl. 10 and 36. 
Specimens sent by Mr. Jerdon have now enabled me to prove their 
distinction. The general arrangement of colour is almost identical 
in these two species, the chief distinction being in the feathers of the 
back, scapulars, tertials and greater wing-covers, which in P. fascia- 
tus are marked transversely with bars of a dull iron-grey (or “inky 
hue,’ as Mr. Jerdon well describes it), while in P. tricinctus these 
bands are of a deep glossy black. In P. fasciatus the wing-covers 
next the body have two or three of these dark bands alternating with 
white ones of equal breadth, the subterminal one being dark, and the 
tip of the feather ochreous yellow. In P. quadricinctus the wing- 
covers have only one black band, (or a very faint trace of a second,) 
narrowly margined on doth sides with a fine white line, the terminal 
and basal parts of the feather being ochreous. 'Temminck’s original 
description of P. quadricinctus is evidently taken from the African 
bird, but he erroneously gives India as its habitat, in consequence of 
having confounded it with P. fasciata. Vieillot has increased the 
confusion by figuring the quadricinctus in his ‘ Galerie des Oiseaux,’ 
pl. 220, under the specific name of bicinctus, while his description 
refers to the true P. dicinetus, Temm., a S. African bird. 
80. W. Otis rhaad, Gm. 
81. N. W. Eupodotis denhami (Vig.). 
82. W. Ortyzelos meiffreni, Vieill. 
83. W. Cidicnemus crepitans, Linn. This seems to me to be un- 
distinguishable from @. senegalensis (Swains. Birds W. Afr. vol. ii. 
p- 228), the description of which agrees with the European bird. 
84. Cdicnemus affinis, Riipp. So exactly does this agree in size 
and form with @. crepitans, that I should have suspected it to be an 
immature bird, did not M. Rippell appear so convinced of its di- 
stinctness. 
85. Pluvianus egyptius (Linn.). 
86. Glareola limbata, Riipp. Closely resembles G. orientalis of 
India, but has the external rectrices about an inch longer. 
87. N. W. Squatarola helvetica (Lin). 
88. N. W. Rhinoptilus chalcopterus (Temm.). (Cursorius chalco- 
pterus, Temm.) This, with the nearly allied M. bitorquatus, Blyth, 
of India, form a very distinct group, connecting Cursorius with Cha- 
radrius. Mr. Blyth first formed it into a genus, under the name of 
Macrotarsus (Journ. Asiat. Soc. Beng. vol. xvii. part 1. p. 254); but 
as the name has been previously used by Lacépéde for genera of 
mammals and of birds, and by Schénherr for a coleopterous insect, I 
