PREFACE. 



IT is with a melancholy pleasure that I now place 

 before the public the collected writings on the TINEINA 

 of his country of the late Dr. Brackenridge Clemens, 

 of Easton, Pennsylvania. 



Little did I think when I received his first letter in 

 1857, two years before he became an author, that his 

 career was to be so brilliant and so short. 



I had for some years contemplated putting together 

 such an arrangement of his writings as would enable 

 those who were previously unacquainted -with them 

 to profit by his remarks on the habits of new genera 

 genera with which we in Europe were unac- 

 quainted. 



It would perhaps be a hasty conclusion were we to 

 imagine that none of his new genera will ever be 

 detected in Europe. 



Through the kindness of Lord Walsingham I have 

 been favoured with a list of Clemens' TINEINA, still 

 extant in the collection of the Entomological Society 

 of Philadelphia, and these I have indicated by an 

 asterisk in the "Attempt at a Classified Arrangement" 

 prefixed to the volume. In a few cases where I have 

 been doubtful whether I had correctly interpreted the 

 meaning of Lord Walsingham's notes I have enclosed 

 the asterisk in brackets, thus (*). 



