4 Introduction 



original state. In contour-feathers the barbules give 

 rise to " barbicels " which regularly end in little hooks 



crown (vertex) 



lore 



hind-head {occiput) 

 ear coverts , auriculars^,^ 



nape {nuch* 



hind-nedc {cervia^'' 



back {dorsum)^ 



scapulars*'-'' 



nitnp {uropygiuni). 



forehead {/roas) 

 .nostril 



Upper-tail coverts. 



.cere 



' ^ ridge {euitnm) 

 ^/'X.^, -maxilla 



""T. cutting edges (tomia) 



'■-"'■mandible 

 '/■gonys- 



'throat {gula) 

 ..'-lesser coverts 

 "■■fore-neck {Juguium) 



. median cbverts' 



" bastard wing [alula) 



. . greater coverts 



■breast {pectus\ 



secondaries {remiges secundarit) 



A Falcon 



To shew the nomenclature of the external parts 



that catch in the folded margins of the next row and 

 serve to produce a firm surface or " web " on each side 



