1916] Chandler: Structure of Feathers 389 



(3) The Phoenicopteri have a type of feather structure which 

 is intermediate between that of the Ciconiae and the Anseres (see 

 summaries on pages 320, 326 and 330), 



(4) The Phaethontidae seem to be more closely related to the 

 Laridae than to the Steganopodes. 



(5) The Alcidae show very striking similarities to the Colymbi- 

 formes, and likewise appear to be closely related to the Laridae, 

 and may therefore be considered as more or less intermediate. 



(6) The Gruiformes, while having some features in common 

 with the Ciconiiformes, seem to be nearer the Limicolae, this being 

 especially true of the Rallidae and Aramidae. 



(7) The strikingly heronlike epiphyology of Eurypyga and 

 Cariama, at least of Eurypyga, suggests the possibility of their 

 being grouped as aberrant Ardeae. 



(8) Cursorius, representing the family Glareolidae, appears to be 

 out of place, and to find its nearest affinity with the Ardeae, rather 

 than with the Limicolae. 



(9) The Pteroclo-columbae seem more closely related to the gallina- 

 ceous birds, especially the alectoropode Galli, than to the Laro- 

 limicolae, with which they seem to have no real relation (see sum- 

 mary, page 362). 



(10) The Tinamidae show strong evidence of being a highly spe- 

 cialized offshoot from the Galliformes (see summary, page 347). 



(11) The - Cuculif ormes are more or less intermediate between 

 the peristeropode Galliformes and Columbae on the one hand, and 

 the Coraciiformes on the other, but seem not to differ to a sufficient 

 extent from the latter to warrant their separation into a distinct 

 order. 



(12) The Trochilidae and all of the suborder Pici, with the 

 exception of the Galbulidae, appear to be more closely related to 

 the Passeriformes than to the Coraciiformes. 



(13) The Galibulidae show evidence of not belonging with the 

 Pici. 



With the exception of these relatively few cases of disagree- 

 ment with the phylogenesis and relationships accepted by Knowlton 

 and Ridgway (1909), the evidence of the morphology of feathers 

 strongly supports the grouping made by these authors, this in turn 

 being the grouping made by Gadow (1891), with a few minor 

 modifications. 



