257 
APPENDIX TO THE PERCHERS. 
CROWNED HORNBILL. 
Buceros coronatus, Shaw. 
Bill red, with a slightly derated keel or crest extending nearly 
to the end of the eulmeu ; plumage brownish-black ; the 
body beneath and stripes round the nape white. 
Le Calao conronne, Le VaiU. Ois. d'Af. 234 Buceros coro- 
nates, Shaw, Gen. Zool. viii. 1, 35 j 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 'bies is as defective 
as that hy Le Vaillant, in regard to those nice 
R 
