III. — Mallophaga from Birds of Costa Rica, Central America 



BY M. A. CARRIKER, JR. 

 INTRODUCTION 



The specimens of Mallophaga, upon which the contents of this 

 paper are hased, were collected by the author during tlie summer 

 of 1902, while engaged in a search for natural history specimens 

 in different regions of Costa Rica, Central America. As will be 

 seen from the text, the birds were collected in three principal 

 localities, namely : Juan \''inas, on the Atlantic slope, at an alti- 

 tude of approximately 3,000 ft. ; the volcano Irazu, situated on 

 the continental divide, the majority of the specimens being found 

 between the altitudes of 8,000 and 10.000 ft., although some were 

 collected at the summit, which attains an altitude of 11,198 ft.; 

 Pozo Azul, on the Rio Grande de Pirns, about thirty miles from 

 the Pacific coast, with an altitude of not more than 300 ft. 



The birds collected are, with the exception of a few duplicates 

 at the University of Nebraska, now in the possession of the Car- 

 negie Museum, Pittsburg, Pa., and I am greatly indebted to Mr. 

 W. E. Clyde Todd, curator of birds and mammals in that insti- 

 tution, for his kindness in giving me the correct determination 

 of the bird hosts, the host list given in this paper having been 

 arranged and corrected by him. i also extend thanks to Mr. C. 

 F. Underwood, of San Jose, Costa Rica, for his kindness in 

 giving me determinations for my specimens while in that ccuin- 

 try, and for the privilege of examining birds, collected by him, 

 for Mallophagan parasites. Lastly, my thanks are due Professor 

 Lawrence Bruner, of the University of Nebraska, under whose 

 direction this paper was written, for his many valuable 

 suggestions during the course of the work. 



The types of all new forms described in this paper are in the 

 collection of the author, with co-types of most of them in the 



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