12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Cossypha heuglini: Heuglin'g robin was added to the known hosts of the black 

 cuckoo by McLean (1957), who found it to be parasitized in the Que Que Reserve, 

 Southern Rhodesia, November 28. 



Cuculus canorus gularis 



To the still limited information on the hosts of the African yellow- 

 billed cuckoo the following should be added : 



Laniarius ferrugineus: G. Duve (in litt., 1962) informed me that he has in his 

 collection three parasitized sets of eggs of the boubou, each with one egg of this 

 cuckoo, all taken near Johannesburg, Transvaal, October 2 to January 12. 



Lanius collaris: In the Transvaal, G. Duve (in litt., 1962) found three instances 

 of the black cuckoo parasitizing the fiscal shrike. 



