Ornithology of tJie Egyptian Soudan. 225 



Chak Chak, generally in parties of seven or eiglit indi- 

 viduals. 



71. Graucalus pectoralis Jard. & Selby, 



a. S' Khor Gitti, 30.1.07. 



b. ?. Wau, 24. 1.07. 



c. ? . Near Chak Chak, 19. 3. 07. 



These Cuckoo-Shrikes were fairly common in the Bahr-el- 

 Ghazal forests along our line of march. 



72. CORVINELLA CORVIXA (Sliaw). 



a. ? . Chak Chak, 13. 2. 07. 



A. ?. „ 15.2.07. 



c. ?. „ 17.2.07. 



d. 2 . Khor Gitti, 31. 1 07. 



e. <?. „ 24.3.07. 



These birds were constantly met with in the forests be- 

 tween Wau and Chak Chak, generally in parties of seven or 

 eight, which played a game of " follow my leader " among 

 the tree-tops. They were nearly always remarkably wary 

 and it was difficult to get within shot of them. 



C. affinis Heugl., the Eastern form, to which my birds 

 belong, seems hardly specifically separable from C. corvina 

 Shaw, with which Dr. Reichenow has united it, 



73. Fiscus EXcuBiTORius (Des Murs). 

 a. $. Chak Chak, 17.2.U7. 



This gregarious Shrike was very much in evidence in the 

 open country from Meshra to Wau, sitting in rows on the 

 telegraph-wires. It was also common along the Pongo and 

 Chell Kivers. 



74. Lanius leuconotus C. L. Brehm. 



L. leuconotus was common at Suakin and Erkowit in 

 March 1906. It was not noticed in the Bahr-el-Ghazal 

 Province. 



75. Lanius nubicus Licht. 



The same remarks apply to this species as to the last. 



