the Sobat and Baro Rivers. 579 
To save repetition, the titles of the principal works quoted 
in this paper have been abbreviated as follows :— 
Capt. Shelley’s ‘ Birds of Africa’ (1896-1906, incomplete) 
is referred to as “ Shelley.” 
Dr. Reichenow’s ‘ Die Végel Afrikas * (1900-1905) is 
quoted as ** Reich.” 
Messrs. Ogilvie-Grant and Reid’s article (‘ Ibis,’ 1901, 
pp. 607-699, pl. xiii.) is quoted as “ Grant & Reid.” 
Mr. Ogilvie-Grant’s paper ‘On a Collection of Birds 
made on the White Nile between Khartum and Fashoda”’ 
(‘ Ibis,’ 1902, pp. 393-470, pls. x. & xi.) is quoted as 
Grant. 
Mr. Oscar Neumann’s paper “ Vogel von Schoa und Siid- 
Athiopien,” J.f. O. 1904-1906, is quoted as “‘ Neumann.” 
Mr. Butler’s article “ Ornithology of the Egyptian 
Soudan ” (‘ Ibis,’ 1905, pp. 8301-401) is quoted as “ Butler.” 
Itinerary of the Expedition. 
November 11th, 1903, toJanuary 14th,1904. Khartum, White Nile. 
January 28th. Kawa, White Nile. 
January 28th, 29th. Renk, White Nile. 
January 5lst. Fashoda. 
February Ist. Moradar, White Nile. 
February 3rd. Sobat River. 
February 15th to 16th. Baro River. 
March 2nd to 7th. Kaig, Baro River. 
March 22nd to 5th April. Polkom, Baro River. 
March 23rd & 27th. Ibaga, Baro River. 
March 26th, 28th, & 29th and April 2nd to 7th. Lake Tinero, Baro 
River. 
March 25th & 26th and April 4th & 7th. Elea, Baro River. 
1. Hererocorax CAPENSIS. 
Heterocorax capensis (Licht.) ; Grant, p. 399. 
Heterocorax capensis minor (Heugl.); Reich. i. p. 633 
(1903) ; Neumann, 1905, p. 230. 
Corvus capensis Butler, p. 326. 
a,b. &. Fashoda, January 31st. 
The above-mentioned examples belong to the smaller- 
billed form of the African Rook, the bill measuring 2°5 inches ; 
in the larger H. capensis from Cape Colony it measures 
