EXPLANATION OF PLATE 7, 



Fig. 1. A foot formed for walking and perching, claws retractile ; as in 

 the genus Falco. 



Fig. 2. A foot formed for walking and perching, claws not retractile, as 

 in the Gallinaceous tribe. 



Fig. 3. A climbing foot as in the Woodpeckers, — Picus. 



Fig. 4. A walking foot, as in the genus Corvus. 



Fig. 5. Foot of the King-fisher, showing the situation and connection of 

 the toes. 



Fig. 6. A spurred leg, as in the genus Phasianus. 



Fig. 7. A leg bare above the knee, as in all the Waders. 



Fig. 8. A semi-palraated foot, as in the genus Ardea. 



Fig. 9. A pinnated foot, with the edges of the toes scalloped, as in the 

 genera Fulica, Phalaropus. 



Fig. 10. A lobated foot, the toes margined by raerabranous edgings, as 

 in the genus Podiceps. 



Fig. IL A three-toed webbed foot as in the genus Alca, Uria. 



Fig. 12. A palmated foot, as in the genera Anas, Recurvirostra. 



Fig. 13. A palmated foot, with four toes connected, as in the genus 

 Pelicanus. 



Fig. 14. The Goldfinch ; a, beak or bill, — fe, the front, — c, the cheek, — 



d, the hind-head, ur occiput, — e, the breast, — ■/, the back, — g, spurious wing, 



— //, shoulder, and lesser wing coverts, — i, secondary quill feathers, — j, j, 



^greater quill feathers, — A-, tertials, — Z, tail coverts, — ?«, tail, — n, great wing 



■ r overts, — 0, auricles or auditory conch, — p, the throat. 



Fig. 15, A spur. 



Fig. 16. A pectinated foot, as in the genus Tetrao. 



