16 Synopsis of the Birds 



Family Sericati. 

 Genus 12. Bombycilla. 



Family Chelidones. 



13. Caprimulgus. Fore toes connected by a mem- 



brane ; hind toe versatile : tail often feathers. 



14. Cypselus. Toes divided ; hind toe versatile : tail 



of ten feathers. 



1 5. Hirundo Hind toe not versatile : tail of twelve 



feathers. 



Family Canopj. 



16. Muscicapa. Bill depressed, notched, with basal 



bristles. 



17. Icteria. Bill robust, compressed, curved, entire. 



18. Vireo Bill compressed, notched, with basal 



bristles. 



19. Lanius Bill curved, with a sharp tooth each side 



near the tip. 



20. Myiothera Bill, at base higher than broad, notch- 



ed : tarsi elongated. 



21. Turdus. Bill rounded-cultrate, at base broader 



than high. 



22. Sylvia. Bill subulate, at base higher than broad. 



23. Saxicola. Bill deeply cleft, subulate, at base 



broader than high and carinated. 



24. Anthus. Bill subulate, notched: hind nail long, 



straightish : two of the scapularies as long as 

 the primaries. 



25. Regulus Bill short, subulate, notched, covered at 



base by a small, rigid, decompound, incum- 

 bent feather. 



26. Troglodytes. Bill rather elongated, very slender, 



curved, entire. 



Family Tenuirostres- 



27. Certhi a. Bill curved : tail feathers rigid, pointed. 



