4 CALIFORNIA ACADEMY OF SCIENCES. 



The sequence of genera in the following paper does 

 not indicate the author's views with regard to the nat- 

 ural relationships of these genera, nor even with regard 

 to the phyletic rank of the suborders. The Ambly- 

 cerous genera, coming last in the present arrangement, 

 are undoubtedly the more generalized of the two sub- 

 ordinal groups. The squence is that adopted in the 

 European monographs and followed by me in my two 

 previous papers (New Mallophaga, I, 1896, and New 

 Mallophaga, II, 1896), and is retained for the sake of 

 uniformity. The sequence of the species of each genus 

 is determined by the host, the sequence of hosts being 

 that adopted in the Check-List of North American Birds 

 (2nd Edition, 1895), published by the American Orni- 

 thologists' Union. The names of the hosts are those 

 used in the Check-List. 



Wherever a species of Mallophaga is met, which has 

 been previously identified by me on an American host, 

 reference is made only to this previous identification, 

 where the synonymy, European hosts, and figure and 

 measurements of the species are given. 



Docophorus. 



Docophorous lari Denny. (See Kellogg, New Mallo- 

 phaga, I, 1896, p. 98, pi. iv, fig. 4.) 



Specimens from Larus sp. (Baja California) and from 

 Larus glaucescens (North Pacific Ocean, ofif Alaska). 

 Taken previously by me from several species of Larus 

 (Bay of Monterey, California.) 



Docophorus icterodes Nitzsch. (See Kellogg, New Mal- 

 lophaga, I, 1896, p. 96, pi. iv, fig. 1). 



