AUTHOR'S PREFACE. 



The papers presented herewitli constitute the third 

 contribution from the Entomological Laboratory of this 

 University (Stanford) to the knowledge of the North 

 American Mallophaga. The two previous papers are 

 respectively, Kellogg, New Mallophaga, I, 1896' and 

 Kellogg, New Mallophaga, II, 1896* and contain in 

 addition to descriptions of species, an introduction to 

 the study of the group, comprising keys to genera, termi- 

 nology, bibliography, etc. 



Mr. Snodgrass's paper presents the results of the first 

 serious attempt to study comparatively the anatomy of 

 .tliese insects. There is yet needed to make the Mallo- 

 phaga fairly known a study of their embryonic and 

 post-embryonic life-history. It is hoped that this study 

 can soon be undertaken. 



Types of the new species described will be placed in 

 the collections of this University, in the collections of 

 the California Academy of Sciences, and in the collec- 

 tions of the University of Kansas. The authors have 

 to express their obligations for services kindly ren- 

 dered in connection with the preparation of this })aper 

 to Mr. Leverett M. Loomis, Curator of the Department 

 of Ornithology, California Academy of Sciences, to 

 Messrs. R. C. McGregor, J. F. Abbott, Cloudsley Rutter, 

 A. W. Greeley, AV. H. Osgood, J. C. Brown, R. C. 

 McLain, R. W. Doane and K. M. Khrhorn, to Prof. 

 Walter E. Miller and to Mi>s Mary II. Wellman, artist. 



\'. L. K. 



Stanford University, 

 April 15, 1897. 



' Proc. Cal. Acad. Scl., 2nd Ser., Vol. VI 



