CONTRIBUTION TO THE ORNITHOLOGY OF SUDAN. 
583 
Subord. CYPSELI. 
Eam. CYPSELIDAE. 
Tachornis parvus (Lihst.) 
Cypselus parvus, Lichst., Verz. Doubl, p. 58 (1823). 
Tachornis parvus (Lichtst.) Hartert, Cat. B. Br. Mus. XVI. p. 463 (1892); Ch. 
Rothsch. & Woll. Ibis, 1902. p. 19; Ogilv.-Grant, Ibis, 1902. p. 429; Reichw. Vög. Afr. 
II. p. 383 (1902-1903); Butler, Ibis, 1905. p. 344, 1908. p. 239. 
2 cT. Karthoum, 23. I. 1911. 
2 ? . Semsir, 20—27. I. 1912 (Count Königsegg). 
Cypselus Horus, Heugl. 
Cypselus aj iniis var. horus, Heugl., N. O. Afr. I. p. 186 (1869). 
Micropus horus (Heugl.) Hartert, Cat. B. Br. Mus. XVI. p. 452 (1892). 
Apus horus (Heugl.) Reichw., Vög. Afr. II. p. 381 (1902 — 1903). 
Cypselus affinis, nec Hardw., auct., Butler, Ibis, 1905. p. 344, 1908. p. 239, 1909. 
p. 400. 
2 cT. Abdin, Blue-Nile, 6. III. 1911. 
This species I first met with on 28 th January on the way when we 
left El-Erediba, though the birds were on wing circling very high in the 
air I succeeded in shooting some specimens, but the wounded ones did not 
fall down. In return from Senga to Senar I discovered also the nesting 
place of these birds on 6th of March on the Blue-Nile near Abdin. It 
was a tolerably big colony together with Riparia minor in the steep cleft 
of the riverside which was absolutly unapprochable, then I was satisfied 
with two males procured for the collection. 
Ordo: COCCYGES. 
Farn. CUCULIDAE. 
Centropus senegalensis (L.) 
Cuculus senegalensis Linné, Syst. Nat. I. p. 169 (1766). 
Centropus senegalensis (L.) Shelley, Cat. B. Br. Mus. XIX. p. 360 (1891); Flower, 
Proc. Zool. Soc. 1900. p. 958; Reichw. Vög. Afr. II. p. 58 (1902-1903). 
cf . Bet-El-Wahas, 16. I. 1912 (Count Königsegg). 
7 . Semsir, Binder, 23. I. 1912 (Count Königsegg). 
The recent authors did not mention this species in their publications 
embracing the Ornithology of the Sudan, bue Flower in his Fauna of the 
White-Nile. I c’ant remember any longer if I saw this cuckoo on our journey 
