CONTRIBUTION TO THE ORNITHOLOGY OF SUDAN. 
565 
Aegialitis alexandrina (L.) 
Gharadrius alexandrinus, Linné, Syst. Nat. p. 150 (1758); Reichw., Vög. Afr. I. p. 
169 (1900-1901). 
Aegialitis alexandrina (L.) Sharpe, Cat. B. Br. Mus. XXIV. p. 275 (1896); Butler, 
Ibis, 1908. p. 262. 
Ç . Blue-Nile, 29. I. 1911. 
Chætusia gregaria (Pall.) 
Gharadrius gregarius, Pall., Reis. Russ. R. I. p. 456 (1771). 
Ghaetusia gregaria (Pall.) Heugl., Sitzb. Akad. Wien, 1856 (16) p. 307; Sharpe 
O at. B. Br. Mus. XXIV. p. 174 (1896); Reichw., Vög. Afr. I. p. 183 (1900-1901). 
V anellus gregarius (Pall.) Butler, Ibis, 1905. p. 396. 
? juv. Semsir, Dinder, 25. I. 1912 (Count Königsegg). 
According to Heuglin this Plover was observed in great flocks on 
the Steppe at East-Senar and Taca, since mentioned only by Butler, who 
killed one of a pair which were feeding together on some newly-ploughed 
land at Khartoum in February 1903. I myself could not meet with this 
bird, but Count Königsegg obtained the above specimen. 
Hoplopterus spinosus (L.) 
Gharadrius spinosus, Linn., Syst. Nat. p. 151 (1758). 
Hoplopterus spinosus (L.), Sharpe, Cat. B. Br. Mus. XXIV. p. 161 (1896); Reichw. 
Vög. Afr. I. p. 186 (1900 — 1901); Flower, Pr. Zool. Soc. 1900 p. 965; Witherby, Ibis, 
1901. p. 227; Ch. Rotsch. & Wollaston, Ibis, 1902. p. 32; Ogilv.-G rant., Ibis, 1902. p. 
459; Butler, Ibis, 1905. p. 395, 1908. p. 261. 
c?. Senga, Blue-Nile, 28. II. 1911. 
Sarciophorus tectus (Bodd.) 
Gharadrius tectus, Bodd. Tabi. PI. Enl. p. 51 (1783). 
Sarciophorus tectus (Bodd.) Sharpe, Cat. B. Br. Mus. XXIV. p. 128 (1896); Reichw., 
Wög. Afr. I. p. 189 (1900-1901); Butler, Ibis, 1905. p. 395, 1908. p. 261. 
2 cf. Between Abu-Hashim and Chamissa, 5. and 6. II. 1911. 
I saw this Lapwing only at the Steppe on the way between Abu- 
Hashim and Chamissa in two or three, pairs feeding on the drey ground of 
which I killed the above enumerated two males. I did not observe this 
species along the rivers. 
