VI INTRODUCTION 



Catalogus, the Biologia Centrali- Americana, the Genera Insectorum, the 

 Bruch Catdlogo Sistemdtico, and others. 



All references are as nearly as possible exact copies of the 

 title page, with the spelling and accents reproduced as they ap- 

 PEARED IN THE ORIGINAL. If there was no formal title (as often occmTed 

 in the Bulletin de la Soci6t6 Entomologique de France) an improvised title 

 is given (in brackets if supplied by the compiler but in parenthesis if derived 

 from tlie heading). Subtitles given above the author's name are cited as 

 part of the title. Subtitles given below the author's name are placed at the 

 end of the reference in parenthesis. Annotations or other matter supplied 

 by the compiler are in brackets at the end of the reference. 



In preparing the bibliography many errors were found in the dates 

 used in the text to refer to certain works. Each work is herein listed under 

 the date now believed to be the actual date of publication, and a cross- 

 reference is given under the date previously cited. Very great care has 

 been taken with the proper dating of parts of works and periodicals, but 

 there are many erroneous dates in use which may have been copied un- 

 knowingly. 



Although the presence of illustrations is alwa^'s noted, in general the 

 plate or figure numbers are not given miless they form a continuing series 

 only part of which pertains to the article in question. In serial works, 

 where the plate numbers continue from one to the next part, they are 

 usually cited. 



Where a bibliography of the works of one author has been published, 

 and he has contributed substantially in our field, the paper is listed at the 

 beginning of that author's list, as well as in its proper place in the bibliog- 

 raphy as a whole. 



So many journals have been cited that it is thought necessary to include 

 a list of these wifh their full titles and data on publication. The abbrevia- 

 tions used in the citations give cross-reference to the full titles. This list 

 grew to such proportions that only a few entomological journals were 

 absent. It thereupon seemed worthwhile to add these few to make it more 

 nearly complete. It is of course still not exhaustive. 



A rather liberal definition of serial was used, which admits a few border- 

 line works that include only the articles of one author. If the separate 

 articles had distinct titles, it was deemed to be a serial. Thus Casey's 

 Memoirs on the Coleoptera are included, because each volume usually has 

 several articles with separate titles, but the Biologia Centrali- Americana 

 is not, because there are not separate titles, A few works w^th separate 

 titles made no pretense of being a continuing series; these are not included 

 as serials and are not abbreviated in the references. They are: 



Obras Cientlficas del Dr. Edmundo Escomel. Lima. 



Libro Jubilar do Professor Lauro Travassos. Editado para Commenorar o 



25o Anniversario de Suas Actividades Scientifica. (1913-1938). Rio de 



Janeiro. 

 Congres International d'Entomologie. 



