Systernatic Arrangement of ï'^ertebrated Anhnnls. 261 



valde protensa : pedes niodici, pollice brevi : alœ elongatœ, remiguni 

 quarta omnium longissima: cauda modica. 



12. M'llvince. Rostrum parvulum, crassum ad basim, sinuatum : cera pro- 



tensa : pedes breves, pollice breviculo : alse longissimœ, remiguni 

 quarta vel tertia vel secunda omnium longissima : cauda elongata. 



13. Fulconinw. Rostrum breve, a basi abrupte incurvum, apice utrinque 

 dentatum : cera brevis : nares rotundre, pistillatœ : pedes médiocres, 

 tarso tenui, nudo, digito medio longissimo, pollice brevissimo : alœ 

 elongatse, acutœ, reinigum secunda omnium longissima. 



14. Accipitrince. Rostrum breve, a basi abrupte incurvum, sinuatum : 

 pedes modici, tarso nudo, digito medio longissimo, postico parum 

 breviore quam interior : unguis internus externo subduplus : alee 

 breves, remigum quarta omnium longissima. 



15. Circ'mce. Rostrum parvulum, rictu amplo, compressum, ad basim pro- 

 fundum, vix sinuatum : cera ad medium protensa : pedes elongati, 

 graciles, nudi : alœ elongatcC, remigum tertia sen quarta omnium 

 longissima. 



5. Strigid.e. Caput ingens plumis densis tectum : oculi niagni, faciales : cera 



obsoleta : rostrum breve, compressum : pedes plumulosi, digitis fissis, 

 externo versatili. 



16. Surnince. Caput modicum : discus facialis, intraocularis tantum, ob- 



soletus : aures parvulee, inoperculatœ. 



17. Bubonhue. Caput grandiculum : discus facialis, intraocularis tantum, 



imperfectus : aures médiocres, inoperculatee. 



18. Ultdbice. Caput grande : discus facialis, oculos excedens, perfectus : 

 aures grandes, operculatœ. 



19. Strig'inœ. Caput immane : rostrum elongatum, ad basim recticulum : 

 discus facialis, oculos excedens, maximus, excultissimus : aures in- 

 génies, late operculatse. 



OrdoS. PASSERES. 

 * Tribus I. Ambulatores. Digiti très antici, unus posticus. 



6. Caprimulgid^. Rostrum brevissimum, depressum, ad basim dilatatum, 



rictu immani : pedes brevissimi, graciles ; digiti antici basi diver- 



