240 DR. H. GADOW ON THE [Mar. 15, 



Tracheo-bronchial muscles attached to 7th or 5th broachial 



rings. 

 Tongue mostly rudimentary. 



I. TuBINARES. 



10. ARDEIFORMES. 



Cosmopolitan. Aquatic. 



Young passing through a downy stage. 



Oil-gland tutted. Aquinto-cubital. Humero-coracoid 



deep. No ectepicondylar process. 

 Desmognathous. No basipterygoid process. 



I. Steganopodes. 



Cosmopolitan. Aquatic. Nidicolous. Piscivorous, 

 llhamphotheca compound. Nares impervious. 

 No supraorbital glands. Angulare truncated. 

 Neck without apteria. 

 Legs short ; all the four toes webbed together. 



( Unique.) 

 Hypotarsus complex. Flexors type of II. 

 Orthoccelous, type II. Tongue rudimentary. 



1. PJiaetontidce. 



15 cervical vertebrae. 

 Procoracoid process large. 

 Garrod's symbol AXYH-. 



2. PhalacrocoracidcB. (including Sulinse, Plotinse, Pha- 



lacrocoracinss.) 

 18-20 cervical vertebrae. 

 Garrod's symbol AX + . 



3. Pelecanidce. 



17 cervical vertebrae. 

 Procoracoid process small 

 Garrod's symbol A — . 



4. FregatidcB. 



15 cervical vertebrae. 

 Procoracoid process small. 

 Garrod's symbol A-f-. 



II. Herodii. 



Cosmopolitan. Waders. Nidicolous. Zoophagous. 

 Bill long, pointed, laterally compressed, with simple 



rhamphotheca. Nares pervious. 

 No supraorbital glands. 

 Neck long, with long apteria. Downs of adults 



only upon the apteria. {Unique among Ardei- 



formes.) 



