12G Proceedings of Indknta Academy of Science. 



Pliysostonum 



angulatum (Kell.) Tyrannus tyrannus — Kingbird 



Physostomum diffusum Poecetes grammineus — Eeaster Vesper spar- 



(Kell.) TOW, N. H. 



Menopon incertum Galeoscoptes ■ — Catbird 

 carolinesis 



This list of species of parasites as related to the hosts upon which they 

 were found is a new one in distribution. Many species (marked N.H. — New 

 Host) here noted were not observed upon these same hosts by other observ- 

 ers. It will be noticed upon comparison with Kellogg's list that generally 

 they are the same genera of birds but a different species. 



Docophorus communis is a widely distributed species. Besides those hosts 

 indicated by Kellogg and others. I have found it on Cyanocitta crista ta. 

 Nirmus vulgatus is recorded for Morula migratoria and for a number of 

 species of western Pipilo. I have found it in addition on Passer domestlcus 

 and Pipilo erythropthalmus. Colpdccphaluni chrysophaeum, I found on 

 Toxostoma rufum and Quiscalus (luiscalns, whorcas Kellogg observed it 

 upon Melosphiza fascinata samuelis in (California. Physostomum difEusum. 

 I found on Poecetes grammineus and Kellogg noted it on Zonotrichia coro- 

 nata, a related species. Lastly, Menopon incertum was found on Galeos- 

 coptes carolinensis and other observers found it on the Gold Finch and the 

 Russet-backed Thrush (Spinus tristis and Turdus ustnlatus). 



This distribution indicates clearly that even though a certain species 

 of louse is observed on a host different than that of another observer, it is 

 a host very closely related. Sometimes there are exceptions and for these 

 Kellog has* no other explanation than that of migration from one bird to 

 another when in close quarters, in roosting on trees during migration of 

 the birds, or huddling together of certain water birds on floating weeds 

 and wreckage at sea. One interesting fact remains, that closely I'elated 

 genera of parasites infest closely related genera of hosts. 



BIBLIOaiiAPHY. 



Kellogg, ^'erncni L. — New Mallophaga I — Proc. Cal Academy of Sciences — 



1896. 

 Kellogg. Vernon L. — New Mallophaga II — Proc. Cal. Academy of Sciences— 



1896. 

 Kellogg, Vernon L. — New Mallophaga III — Proc. Cal. Academy of Sciences — 



1899. 

 Kellogg, Vernon L. — A List of Biting Lice ( Mallophaga ) from Birds and 



Mammals of North America. Proc. Ignited States Nat. Mus. 



Vol. XXII— 1899. 

 Kellogg, Vernon L. — Distribution and Specie- -forming of Ectoparasites. 



Am. Naturalist Vol. XLVII— 1913. 

 Osborn, Herbert— Insects Affecting Domestic Animals U. S. Dept. Agr. 



Bull. No. 5—1896. 



