HORN-BILL. 



303 



GENUS X— HORN-BILL. 



1 



Rhinoceros H. 



S 



Gingi H. 



18 



Ridged H. 



2 



Crescent H. 



9 



Indian H. 



19 



Narakarac H. 



3 



Helmet H. 



10 



Pied H. 



20 



Angola H. 



4 



Bifronted H. 





A; Var. 



21 



Crowned H. 



5 



Concave H. 



11 



Grey H. 



22 



Black-billed H. 





A. Var. 



12 



Green-winged H. 



23 



Red-billed H. 





B. Indian H. 



13 



Abyssinian H. 



24 



Yellow-billed H 



6 



Flat-crowned H. 



14 



Panayan H. 



25 



White H. 



7 



Unicorn H. 





A. Manilla H. 



26 



Ceylon H. 





A. Malabar Pied H. 



15 



Indented H. 



27 



Crimson H. 





B. Coromandel Pied H. 



16 



Wreathed H. 









C. Var. 



17 



New-Holland H. 







1 HIS Genus has a great, bending bill ; in many, a large protu- 

 berance, resembling another bill, on the upper mandible. 



Nostrils small, round, placed behind the base. 



Tongue small, short.* 



Legs scaly, toes three before and one behind, the middle one 

 connected with the outer as far as the third joint, and to the inner as 

 far as the first. 



Birds of this Genus seem to hold the same place in the old Conti- 

 nent, as the Toucans do in the new, the latter being found in America 

 only. 



Perhaps the same kind of food may be usual to both ; and if so, 

 the greater part of their diet consists of fruits. As to their eating 

 fish,t it seems not to be fully proved, though many authors assert the 

 circumstance. This must be determined by future observations. We 

 must not depend on the depraved state of appetite often found in 

 birds when in confinement, perhaps consented to from necessity 

 rather than choice, for want of obtaining that which is better adapted 

 to their palate. 



* Scarcely one inch long in one species.' — Phil. Trans. 23. p. 1394. 

 f That they do eat fish by choice, seems manifest, from several observations below mentioned. 



