252 BIRDS OF INDIA. 



in Burmali and Malacca. The genus Cranorhinus, Cabanis, (the same 

 as Cassidix, Bonap.,) is founded on B. cassidLv, Temm., to -which 

 sukatus, and corrugatus^ appear nearly related ; and gracilis, T., 

 might be the female of the latter. These two forms, with Aceros^ 

 constitute Bonaparte's genus Calao. 



Other forms of Hornbill found in the iMalay peninsula and 

 the neighbouring isles are Rhinoplax, founded on B. scutatus, 

 {galeatus, Auct.), with a red bill and lengthened tail. Berenicomis 

 was constituted for B. comatus Raffles ; and B. Tickelli, Blyth, 

 lately discovered by Major Tickell in Tenasserim, belongs to the 

 same group, a somewhat similar form to which has also lately 

 been found in Western Africa. Anorhinus is founded on B. 

 galeritus, Temm., of which Blyth's cainnatus is the young. 

 This form makes an approach to T. gingalensis. The Buceros 

 Abyssinicua, or Ahhagumha of Bruce, before alluded to, has been 

 separated from Bucorvus, which contains the large black and 

 white Hornbills of Africa, as Tmetoceros, Cabanis, Bueorax, 

 Sundevall. 



Tribe Scansores. 



Syn. Zygodactyli of some. 



Toes in pairs ; bill, wings, and tail, various. 



The birds composing this tribe diiFcr among themselves as much, 

 if not more so, than those of the Fissirostres. The chief point of 

 resemblance among them is the feet. The toes are long ; the outer 

 toe is either turned completely backwards, or is articulated at 

 right angles to the anteriors, and is often larger than them, whilst 

 the hind-toe is remarkably small. This structure enables them to 

 climb well. The wings, as a general rule, are short and rounded, 

 whilst the reverse is the case in the last tribe. These bh'ds are very 

 arboreal, a few only habitually descending to the ground. Some 

 of the families live exclusively on fruit, others entirely on insects, 

 and some partake of both. They do not all of them climb, as the 

 name would imply ; but some hop about the branches of trees in 

 search of fruit and insects. Most of them nidificate in holes of 

 trees, and have wliite eggs. A few construct inartificial nests, and 



