158 BIRDS OF SOUTH AFRICA. 
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141. Coccysrzs cAFER. Levaillant’s Cuckoo. 
Oxylophus afer, Layard, B. 8S. Afr. p. 253. 
This large Crested Cuckoo is distinguished by its black-striped 
throat. It is not of frequent occurrence in South Africa, and we 
have only seen two specimens, from Swellendam, where they were 
procured by Mr. Cairncross. Wahlberg shot it on the Limpopo. 
© Like the rest of the Cuckoos found in Damara Land,” writes Mr. 
Andersson, “this species is only a periodical visitant during the 
rainy season, and takes its departure long before the return of the 
dry weather. I have heard its note on the river Okavango as early 
as September, but it is a scarce bird in that district, and very rare 
in Damara Land. It always appears in pairs, and is of a rather shy 
and retiring disposition.” 
Adult male.—Above shining greenish black, the head deeper black 
and ornamented with a long crest of lanceolate feathers; lores and 
ear-coverts dull black; quills brown, the inner webs white at the 
base, the primaries also externally white at the base, causing a large 
alar speculum, the inner secondaries greenish black like the back ; 
tail greenish black lke the rest of upper surface, broadly tipped with 
white, the inner webs showing somewhat of a purple tinge; under 
surface of body buffy white, the feathers of the throat, breast, and 
under tail-coverts, black in the centre, giving a thickly striped 
appearance, the flanks also somewhat mottled with black centres to 
the feathers; under wing-coverts white, streaked with black, the 
lower ones entirely black ; bill black; feet brown, tinged with lead- 
colour; iris dark olive. Total length, 15°5 inches ; culmen, 1°1; 
wing, 74; tail, 10°2 ; tarsus, 1-05. 
Fig. Levaill. Ois. d’Afr. v. pl. 209. 
142. CoccysTEs JACOBINUS. Black and White Cuckoo. — 
Oxylophus melanoleucus, Layard, B. 8. Afr. p. 252. 
This species inhabits the same country as C. serratus, and was 
mistaken by Levaillant and Verreanx for the hen of that bird; it is | 
however quite another species. Like O. glandarius it has a whitish 
breast, but can be told by the absence of spots on the wing, and,by | 
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