2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO7 



tion was given on the dates of publication or the accuracy of the re- 

 setting. In 191 1 Sherborn and Durrant published an analysis of the 

 dates of publication of these reprinted parts. These authors comment 

 on the contents of the reprints as follows : "Parts one to eight were 

 rewritten and enlarged, some from two to ten pages, with alterations 

 of nomenclature and additions ; parts nine to thirty were reset and re- 

 printed without alteration or addition ; and parts 31 to 192 were all of 

 the first edition, i.e., one setting and one printing." Three cases of 

 changes of name, one case of additions to a plate itself, and one of in- 

 creased text are cited in addition. 



Messrs. Sherborn and Durrant either failed to notice or did not at- 

 tach any importance to the facts that in three cases the genotype desig- 

 nation was changed and that major nomenclatural revisions occurred 

 in five other cases. The realization of this makes the recognition of 

 the reprinted plates of great importance, since neaily all sets of this 

 work contain the reprints mixed in with the original edition. 



The recognition of the edition of certain parts and certain plates 

 can be made by means of "clues" listed by Sherborn and Durrant. I be- 

 lieve that if these writers had attached more importance to the identifi- 

 cation of these editions they would have recorded more universal 

 recognition characters. 



The present writer is fortunate to have at his attention one set of 

 the original edition bound in 16 volumes as published, in numerical 

 order, and one set bound in 8 volumes in systematic order, containing 

 all the reprinted pages. ^ The first of these is in the library of the 

 United States Department of Agriculture, Washington, D. C. ; the 

 second is in the entomology section of the library of the United States 

 National Museum, Washington, D. C. 



Comparison of these two sets page by page reveals many interesting 

 points. First, in every case except the text of plate 30 and those plates 

 after 34, the second edition can be at once identified by the addition of 

 an underscoring line beneath the plate number on the text and the 

 plate, Plate 30 can be recognized by the addition of the systematic 

 serial number 283 to the text and plate and the underscore on the plate. 



The dates given on the original plates are believed to be entirely ac- 

 curate, but the reprinted plates have the same dates as the originals, 

 which is obviously erroneous. Any plate with the plate number (at 

 top) underscored is a reprint and its actual date of publication is much 

 later than shown. 



1 Three other sets have been examined in detail, as described in part II of 

 this paper. 



