352 SAUEOPSIDA (birds). 



(v) Coracice, — Cosmopolitan. Desmognathous. Basi-pterygoid processes 

 generally absent. 14 or 15 cervical vertebrae. 



(1) Coraciidce (Rollers). — No downs on adults. 14 cervical 



vertebrae. 10 primaries. Dorsal apterium. Oil - gland 

 nude. Right and left carotids present. Caeca functional. 



(2) Momotidw (Motmots). — No British species. 



(3) Alcedinidce {King&BheTs). — No dorsal apterium. llprimaries. 



Oil-glands tufted. Downs present on adults on pterylae 

 and apteria. 15 cervical vertebrae. Caeca not functional. 

 Tongue rudimentary. 



(4) JI/cropidcB (Bee-eaters). — Insectivorous. No downs on adults. 



Left carotid only. Caeca functional. Oil - gland nude. 

 No dorsal apterium. 



(5) Upupidw (Hoopoes and Hornbills). — Oil-gland tufted. No 



after-shaft. 14-15 cervicals. No caeca. Tongue rudi- 

 mentary. The Hoopoes have 10 primaries, the Hornbills 

 11. The former only are represented in Great Britain, 

 (vi) Pici (Woodpeckers and Wrynecks). — Hallux and 4th toe turned 

 back, 2nd and 3rd forwards. Schizognathous. Nestling and adult 

 downs absent. 14 cervicals. Nest in holes. Caeca absent except 

 in (1). 



(1) OalhvlidcB (Jacamars). — No British species. 



(2) Picidce (Woodpeckers, &c.) — Left carotid only. Schizo- 



ffigithognathous. Spina externa forked. 



(3) Capitonidce (Honey -guides, &c. ) — No British species. 



(4) RJiamphastidw (Toucans). — No British species. 



14. Fasseriformes. — Cosmopolitan. Young nestlings with downs of 

 complex structure, neck with lateral apteria. jEgithognathous.^ No basi- 

 pterygoid processes. 14-15 cervical vertebrae. Sterna with small notches. 

 Spina externa long, spina interna absent. Toes normal. Oil-gland nude. 

 Caeca not functional. 



(i) Olwmaiores. — No British species i^Ewrylomidm or Broad Bills, &c.) 



(ii) Oseimes. — Hallux the strongest toe, with large claw. 



(1) Suh-oscines (Menuridae). — Australian. 



(2) Oseimes or singing-birds proper. 



1 ^githognathous = maxillo-palatines free. Vomer truncate in front. 



