call them — the study of Ornithology has unquestionably become harder and more 

 serious ; and a corresponding change in the style of investigation will be immediately 

 perceptible." 



In 1867 Professor Huxley promulgated his celebrated ' Classification 

 of Birds, ' and this has been universally recognized as an epoch- 

 making memoir in the history of Ornithology. In dealing with the 

 Classifications of the last twenty-five years, I may be allowed to 

 refer to a few of them in detail, and no sketch of the classificatory 

 schemes of the Darwinian epoch would be complete without an epitome 

 of Professor Huxley's Classification, the publication of which had im- 

 mediate and far-reaching effects. I have also incorporated the results 

 of his later memoirs. 



Order I. SAURUR^, Haeckel. 



Genus 1. ArchcBopteryx. 



Order II. RATITiE, Merrera. 

 1st Group. 



Genus 1. Stnithio. 

 2nd Group. 



Genus 1. Rhea. 

 3rd Group. 



Genus 1. Casuarms. 

 2. Drotnceus. 

 4th Group. 



Genus 1. Dinomis. 



5th Group. 



Genus 1. Apterya:. 



Order III. CARINAT.S:, Merrem. 



Suborder I. DROM^OGNATH^]. 

 Family 1, Tinamid^e. 



Suborder II. SCHIZOGNATH^. 

 Group 1. Charadriomorphae. 



Family 1. CHARADRiiDiE. 



2. SCOLOPACID^. 



Group 2. Geranomorphae. 



Family 1. Gruid^. 



Intermediate forms : PsopJn'a, Rhmochctus. 

 Family 2. Rallid.^. 



Intermediate forms : Otis, Curiama. 



Group 3. Cecomorphae. 



Family 1. Labid.ts. 



2. Procellaeiid^. 



3. colymbid^. 



4. Ax.c,ujm. 



