257 



APPENDIX TO THE PERCHERS. 



CROWNED HORNBILL. 



Buceros coronatus, SHAW. 



Bill red, with a slightly elevated keel or crest extending nearly 

 to the end of the culmen ; plumage brownish- black ; the 

 body beneath and stripes round the nape white. 



Le Calao couronne, Le Vaill. Ois. d^Af. 234 Buceros coro- 

 natus, Shaw, Gen. Zool. viii. 1, 35 ; Zool. Illust. 1st series, 

 pi. 178. 



THERE may be some doubt whether this is speci- 

 fically the same as the B, coronatus of Southern 

 Africa, for although their general cast of colours 

 seem to agree, there yet remains some difference 

 between the two. The Senegal bird is certainly 

 much larger than a magpie, for it measures full 

 eighteen inches in extreme length, while the Cape 

 species is said to be smaller than that bird. In 

 this the whole of the tail-feathers, and not merely 

 the three external pair, are tipt with white, while 

 the under plumage of the body is strongly tinged 

 with fulvous ; there is a dark brown line also at the 

 cutting edges of the mandibles. Unfortunately our 

 former description of the Cape sp uies is as defective 

 as that by Le Vaillant, in regard to those nice 



