V] 
Introduction 
made to have the references full and complete and to give an indication 
of the character of the data contained. Where the writer knows that 
reprints have been issued with different pagination, this is indicated in 
parentheses following the page numbers of the original. In a few cases, 
where the matter has been reprinted under a different title with different 
pagination, separate references are given. Where authentic editions have 
been published these have been indicated by separate references. Genera 
established without included species have been dated from their original 
description, with their type fixation dated at the time of the first inclusion 
of species. Original spellings have been retained in all cases, except ob¬ 
vious typographical errors. Typographical errors are indicated by placing 
“[sic]” after the misspelled name. 
The determination of obvious typographical errors is not always easy. 
These errors range all the way from clearly apparent transpositions of 
letters, to misspelled names of individuals, geographical names, and 
many others of like character. However, so many generic names have 
been formed by the transposition and substitution of letters that one is 
often at a loss to know which names are misspelled and which are not. 
For example, Neokolla and Keonolla , or Alebra, Elebra , and Eualebra. 
All variations in spelling save those which refer to endings only, are 
appropriately cross-referred. The species have also been listed under 
every known generic combination so that it is possible to find any species 
without recourse to the index, which will be published at the completion 
of the Fascicle, together with the full bibliography. 
The writer takes no pride in the authorship of nomen nova. He uses 
them only when he thinks they are necessary. No new names are proposed 
for species or genera described by living authors without first giving 
the original author an opportunity to correct primary or secondary 
homonyms. 
A catalogue is not a revision of a group and the location of the genera 
and species in the present catalogue is merely an attempt to reflect what 
is believed to be the general consensus of the best authorities at the 
present time. Doubtful genera and species have been included to call 
them to the attention of subsequent revisers. 
An attempt has been made throughout this catalogue to interpret all 
references in the light of the period in which they were published. This 
is not always easy and leads perhaps to erroneous conclusions at times, 
but it is certainly much sounder from the standpoint of nomenclature 
than the tendency to evaluate references from previous decades in the 
light of present day practices and procedures. 
In the present number of this series we have departed from our pre¬ 
vious method of giving latinized names to varieties which in the past 
