12 Synopsis of the Birds 



§§ Anterior toes united to the first joint or beyond. 

 7. Syndactyli. Bill straight, entire. 

 S. Serrati. Bill exceedingly large, curved, serrate. 

 TRIBE II. AMBULATORES. Toes three before, one behind. 

 § Feet gressorial. 



9. Dentirostres. Bill cultrate : tibiae feathered. 



10. Angulirostres. Bill subquadrangular, acuminate : tibia? 

 half naked. 



§§ Feet ambulatory. 



11. Gregarii. Bill robust, conic-acuminate, or cultrate. 

 forming a sinus in the front feathers. 



* Bill conic-acuminate. ** Bill cultrate. 



12. Sericati. Bill short, depressed : gape very wide : wings 

 and feet moderate. 



13. Chelidones. Bill very short, depressed, slender: gape 

 very wide : wings very long : feet remarkably short. 



14. Canori. Bill moderate, more or less subulate: outer 

 toe united at base to the middle one. 



* Bill depressed. ** Bill robust, convex, compressed. 

 *** Bill subcultrate. **** Bill subulate. 



15. Tenuirostres. Bill elongated, slender: tongue not 

 extensible. * Anerpontes. ** Epopsides. 



16. Anthomyzi. Bill elongated, very slender: tongue 

 extensible. 



17. ./Egithali. Bill short, hard, conic-subulate : hind toe 



and nail largest. 



18. PasSERINI. Bill short, robust, conic. 



19. Columbini. Bill vaulted: nostrils covered by a turgid 



membrane. 



20. Passerigalli. Bill vaulted, no turgid membrane. 



