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Order XXI. PHCENICOPTERIFORMES *. (Temperate aud 

 Tropical portions of both hemispheres.) 



Suborder xliii. Phoenicopteri. 



Order XXII. ANSERIFORMES. (Cosmopolitan.) 

 Suborder xliv. Anseres f. 



Eam. 1. Cnemiobnithid^. 

 Fam. 2. Anseranatidje. 

 Fam. 3. Plectroptebid.^. 

 Fam. 4. Anatid^. 



Subfam. Anserince. 



Subfam. CygnincB. 



Subfam. AnatincB. 



Subfam. Mercjince. 



Suborder xlv. Palamedeae J. (Neotropical.) 

 Fam. ANHiMiDiE. 



Order XXIII. PELEOANIFORMES. (Cosmopolitan.) 

 Suborder xlvi. Phaethontes §. 

 Fam. Phaethontid^. 



* Palate desmoguathous ; basipter3'goid processes abseut or very rudimentary ; 

 nasals holorhinal ; mandible much produced and recurved behind its articulation with 

 the quadrate (e/. Seebohm, t. c. p. 30). Lachrymo-nasal region elongated ; frontalia 

 narrow, not covering the orbits above ; grooves for orbital glands present ; cseca well 

 developed; bill with lamellae like a Duck (cf. Stejneger, t. c. p. 153). Nest built of 

 mud, exposed, in a lake. Egg one, white. Young covered with whitish down and 

 able to run soon after being hatched. 



t Basipterygoid processes on the rostrum of the basisphenoid which articulate with 

 the pterygoids as near the palatines as possible ; maxillo-palatines completely coalesced 

 across the middle line ; mandible produced and recurved behind its articulation with 

 the quadrate ; sternum with only one shallow notch on the posterior margin ; oil- 

 gland tufted. (C/". Seebohm, f. c. p. 31.) Toes webbed ; bill lanceolate. Nest of rough 

 construction, variously situated. Eggs numerous, creamy buff or greenish white or 

 pure white. Yoimg covered with down when hatched, and able to run or swim 

 at once. 



\ Palate desmognathous ; no uncinate processes to the ribs ; cervical vertebrte more 

 than 18 ; plumage of upper parts with no spinal bare tract. {Cf. Seebohm, t. c. p. 32.) 

 For a comprehensive description of myological and other anatomical characters, cf. 

 Stejneger, t. c. p. 133, Nest of rushes of slight construction, the foundation in the 

 water. Eggs six, white. Young covered with yellow down, and able to provide for 

 themselves in a few days {cf. Gibson, Ibis, 1880, p. 165). 



§ Palate desmognathous ; mandible not produced and recurved behind its articu- 

 lation with the quadrate ; no basipterygoid processes ; nasal apertures large ; palatines 

 not coalesced ; sternum not perforated to receive the feet of the coracoids ; plumage of 

 neck continuous ; no bare tracts ; hallux united to second digit by a web ; front plantar 

 not leading to hallux. {Cf Seebohm, t. c. p. 26.) An excellent review of myological 

 and other characters is given by Stejneger, t. c. p. 181. Nest none. Egg one only, 

 mottled, reddish brown. Young hatched covered with down, and fed by the parent 

 birds for some time. 



