STEGANOPODES. 26$ 



Subclass ANSERIFORMES. 



[Seebohm, Classif. B. p. 24.] 



A. Palate desmognatlious. 



B. Spinal feather-tract not defined on the neck (either coalesced 



with the ventral feather-tracts, or its place occupied by a 



spinal bare tract). 

 C Flexor perforans difi'itornm never leading to hallux. 

 D. Young always passing through a downy stage. 



Order I. STEGANOPODES*. 



[Cr/. Seebohm, Classif. B. p. 26.] 



A. Palate desmognathous. 



B. Basipterygoid processes absent. 



C. Sternum not perforated to receive the sternal ends of the 



coracoids. 



D. Mandible not produced and recurved behind its articulation 



with the quadrate. 



Suborder I. PHAETHONTES'{. 



[Sharpe, Keview, p. 76.] 



A. Palate desmognathous. 



B. Basipterygoid processes absent. 



C. IVIandible not produced^ and recurved behind its articulation 



with the quadrate. 



D. Nasal apertures large. 



E. Palatines not coalesced. 



F. Plumage of neck continuous ; no bare tracts. 



G. Hallux united to second digit by a web. 



H. Flexor perforans digitorum not leading to hallux. 



* " Pelecani formes," Sharpe, Review, p. 76. Cf. Lydekker, Cat. Fossil B. 

 Brit. Mu9. p. m (1801). 

 t Stejneger, Stand. Nat. Hist. Bird?, p. 181 ; Seebohm, Classif. B. p. 26. 



