1917.] 



Chapman, Distribution of Bird-life in Colonibia. 



181 



List op Families with the Number of Species by which each is Repbesbnted. 



New Forms Described. — In the course of our work it has been found 

 necessary to describe as new twenty-two species, and one hundred and 

 fifteen subspecies from Colombia. Some of these are actual discoveries, 

 the distinctness of others has been revealed merely by the large amount 

 of material we have brought together for comparison. I give below a list 

 of the forms described in former volumes of this Bulletin, and also of those 

 described in the present paper. In some instances, it will be observed, 

 later conclusions based on larger collections, or on information received from 

 other ornithologists, notably Dr. C. E. Hellmayr, have induced me to with- 

 draw certain proposed forms. 



