INTRODUCTION 



In a recent re-arrangement and revision of the Diurnals in the 

 Barnes' Collection we have been struck not only by the difficulty in 

 determining what is the nimotypical form of a given species but 

 also by the numerous errors which occur in the literature regarding 

 many of the species especially in such difficult groups as the Melitaeas 

 and Lycaenids, one of the worst offenders in this respect being W. 

 G. Wright, whose "Butterflies of the Pacific Coast" fairly bristles 

 with errors. 



We offer the following notes based on a study of the material 

 in the collection and also of many of the still existant type specimens 

 in various museum collections and trust that they may serve as a 

 spur to collectors to endeavor to clear up the still doubtful points, 

 many of which can only be solved by patient work in the type 

 localities of the species. 



