302 EOCK STRIKE. 



Its size appears to be at least equal to that of the 

 Lanius Excubitor; the crown of the head and 

 nape black, and across the eyes a black streak: 

 the back brown ; the wings bright ferruginous, the 

 smaller feathers nearest the body being black with 

 pale ferruginous edges : the tail rather long, cune- 

 ated, and of a black colour with white tips : all the 

 under parts of the bird white, passing over the 

 shoulders to the middle of the back, as in the 

 Collared Shrike; bill black: legs yellowish. Na- 

 tive (as appears from its title) of Africa. It is ac- 

 curately described by Monsr. Levaillant under the 

 title of Tchagra: it is a bird of slow flight, fre- 

 quenting low places, and feeding on caterpillars 

 and other insects. It appears so nearly allied to 

 the Senegal Shrike as to make it doubtful whether 

 it may not in reality be the same species. 



ROCIC SHRIKE. 



Lanius infaustus. L, sub/errugineO'Cinereus, capife suhcristato, 



Cauda elongata rotmdata ferniginea, 

 Subferruginous-grey Shrike, with subcristated head, and 



lengthened, rounded, ferruginous tail. 

 Lanius infaustus. L. dot so ci/iereo, rectricibus rnfis, intermediis 



duabus cinereis fascia nigrkante, cauda rotundata, Lin, S}/sC, 



Nat, 



Corvus Sibiricus. Lin. Gmel. 



Geay de Siberie. Buf. ois. PI. Enl. 608. 



Mr. Latham, in his Index Ornithologicus, 

 ranges this species in the genus Corvus, under the 

 title of Corvus infaustus^ and indeed it may be 



