APPENDIX A. 
LIST OF AUTHORITIES REFERRED TO IN THE PRECEDING- REPORT. 
In the present Appendix I have endeavored to furnish as complete an account as possible of 
the articles and works quoted in the preceding pages. They have nearly all been examined 
by myself, with reference to the present report; and the few titles which have not fallen under 
my observation, but have been borrowed from other authors, will be found placed between 
quotation marks. Whenever these marks do not occur, either here or in the synonymy of the 
report itself, the references are to be understood as having been personally verified. 
All the works referred to without quotation marks are to be found in the library of the 
Smithsonian Institution, unless some other depository be assigned, such as the library of the 
Philadelphia Academy of Natural Sciences, and a few others. In many cases, where the works 
previously consulted were not at hand when preparing this list, abstracts only, either of the 
volumes or of their contents, have been given, instead of the full title of each separate article, 
unless these were to be found in the Nomenclator Zoologieus and Bibliographia Zoologiae 
of Professor Agassiz, or in the Bibliotheca Historico-Naturalis of Engelmann. Of these 
important bibliographical aids I have made free use throughout, although I have copied the 
titles, as far as I could conveniently, from the works themselves. The titles given between 
quotation marks have, however, in nearly all cases, been taken from the volumes just mentioned. 
