SYNOPSIS OF ORDERS AND FAMILIES. 



ORDER IV. CORMORANTS, PELICANS, GANNETS, MAN-O'WAR BIRDS, 

 AND TROPIC-BIRDS. STEGANOPODES. 



(6 families, 19 species, 5 subspecies.) 



Large birds, two feet or more in length, varying widely in appear- 

 ance and habits; in external structure agreeing only in having all four 

 toes joined by webs. 



YELLOW-BILLED TROPIC BIRD. 



Family 9. TROPIC BIRDS. PHAETHONTID^. 



Bill pointed, somewhat tern-like; central tail feathers much elongated; chin feathered. 



GANNET. 



Family 10. GANNETS. 



Bill stout, its tip not hooked; chin and eye space bare; tail pointed, its feathers not 

 'fluted.' 



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