W. R. OGILVIE-GEANT— AVES. 389 



the iuner webs are always conspicuously pale greenish-yellow. Iris dark brown ; bill 

 and feet black. Total length ca. 8'0 inches ; wing 4-1 ; tail 3-5 ; tarsus 0'85. The 

 single male procured by Mr. E.. E. Dent is almost certainly referable to this species. 

 There is another perfectly similar specimen in the British Museum labelled "Gaboon 

 (P. Bu Chaillu), Tweeddale Collection," which has been wrongly identified as C. nigra; 

 also an adult female from Angola, procured by J. J. Monteiro and doubtfully referred 

 to C. hartlaubi Salvad. 



I have also examined in the Tring Museum two males and a female of this species, 

 which, like the bird described above, were also collected in the Mpanga Forest by 

 Herr R. Grauer : likewise a male from Nandi, Uganda, obtained by Dr. W. J. Ansorge. 



[A single specimen of Oustalet's Cuckoo-Shrike was obtained in the Mpanga Forest 

 E. of Ruwenzori. It was shot in the top of a tall tree. — B. B. W.'\ 



Gkaucalus c^sius Licht. 



Graucalus c(Bsius Grant, Ibis, 1900, p. 171. 

 Coracina catsia Reich. Vog. Afr. ii. p. 514 (1903). 

 Coracina pura Reich. Vog. Afr. ii. p. 515 (1903). 

 Graucalus purus Jackson, Ibis, 1906, p. 538 [Ruwenzori]. 



a-g. d ? et d imm. Mubuku Valley, E. Euwenzori, 6000-9000 ft., 4th-18th 



d. d. 



Jan. [Nos. 93, 96. B. E. D. ; 1131, 1150, 1165. D. G. ; 2056. G. L. ; 3086. 

 B. B. W.] 



h-m. c? ? . Mubuku Valley, E. Ruwenzori, 6000-9000 ft., 3rd-18th Feb. [Nos. 142, 

 d. d. 



147. B. E. B. ; 1232. B. C. ; 2160. G. L. ; 3146. B. B. If.] 



n. S imm. Mubuku Valley, E. Ruwenzori, 8000 ft., 21st March. [No. 3248. 

 B. B. W.] 



Dr. Reichenow and other ornithologists still continue to separate East African 

 examples of this Cuckoo-Shrike from typical G. coesius from South Africa. Of the 

 above, eight adult males have the wing-measurements as follows : — (1) 120 mm. ; 

 (1)122; (3)123; (1)125; (2) 126. 



In four adult females the wing-measurements are : — (1) 121 mm. ; (2) 123 ; (1) 127. 



In the male type of G. pitrus Sharpe from Mount Elgon the wing measures 126 mm. 



In typical examples of G. ccesius from Cape Colony, &c., the average measurement is 

 about 127 mm., /. e. about 2 mm. more than in G. ■puni'S, and it appears absurd 

 on that account to retain G. purus as a separate species. There is no difference 

 in the colour of the plumage. 



It has been stated by Dr. Sharpe [cf. 'Ibis,' 1891, p. 121) that the white margins of 

 the qriills in G. coBsius distinguish that species from G. purus, which has the external 

 edges of the primaries slaty-grey like the back. But the fact is that the white edges 



