782 Messrs. Sclater and Mackworth-Praed on __ [Ibis, > as used in this part of the paper, The word “ Sudan,’ means the Anglo-Egyptian Sudan only.

The following new races are described in this instalments — Stigmatopelia senegalensis sudanensis.

Turtur afra mearnsi. Ptilopachus petrosus butleri.

_ Ptilopachus petrosus ladoensis, We had hoped to be able to give, at the conclusion of this paper, some remarks on the general relationship and distribution of the Sudanese avifauna, as well as on the migrants both Palsearctic and “ Inter-tropical ” which occur in the country, but at the moment space and time alike forbid.

Family PeL.ecanipa.

Pelecanus onocrotalus subsp.

Pelecanus onocrotalus Linn. Syst. Nat. 10th ed. 1758, p. 182: Africa; Reichw. V. A. i. p. 99; Butler, Ibis, 1905, p. d81.

[C. & L. coll.] 8 Kodok Mch. U.N.

There can be little doubt of the occurrence of typical P. onocrotalus in the Sudan, but the three specimens collected seein decidedly intermediate between that form and the small eastern form P. 0. roseus Gmel. They are all females with bills (culmen from tip of feathers) of 810, 825, and 342 mm. P. 0. roseus is also recorded by Heuglin.

Pelecanus rufescens.

Pelecanus rufescens Gmel. Syst. Nat. 1. pt. 2, 1789, p. 571: West Africa; Reichw. V. A. i. p. 102; Butler, This, 1905, p. 381, 1908, p. 256.

Common in the Sudan, though we have no actual specimens, Family Surip#.

Sula leucogaster subsp. ?

Pelecanus leucogaster Bodd. Pl. Enl. 1783, p. 57, No. 973 (ex Buffon) : Cayenne,