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-fieher, showing the situation and connection of 

 the toes. 



Fig. 6. A spurred leg, as in the genus Phasianu?. 



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



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



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

 genera Fnlica, Phalaropus. 



Fig. 1 0. A lobated foot, the toes margined by membranous edgings, as 

 in the genus Podiceps. 



Fig. 11. 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 genu* 

 Pelicanus. 



Fig. 14. The Goldfinch ; a, beak or bill, 6, the front, c, the cheek, 

 <f, the hind-head, or occiput, e, the breast,/, the back, g, spurious wing, 

 h, shoulder, and lesser wing coverts, i, secondary quill feathers, j, .;, 

 greater quill feathers, fc, tertials, Z, tail coverts, m, tail, n, great wing 

 coverts, o, auricles or auditory conch, p, the throat. 



Fig. 15. A spur. 



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



