with the limits naturally imposed by the large number of 
species. 
In the difficult and contentious department of synonymy 
the principal aim will be to avoid confusion and to indicate 
clearly what is the species under consideration. 
Mr, Barrett has secured the sympathy and assistance 
of many of the leading Lepidopterists of this country, 
including Mr. Stainton, whose works are still the standards 
on the subject, Dr. Mason, and Mr. Sydney Webb, whose 
collections are probably unrivalled for number of native 
species, and many others. 
The work is issued to subscribers in two forms:— 
a Large Paper Edition, with hand-coloured Plates, in 
Monthly Parts at each (or Twelve Parts for 54^. if 
paid in advance), and a Small Paper Edition in volumes, 
without Plates, at 1 2 s., or, if paid in advance, 10s. each. 
L. REEVE & CO., 
5 Henrietta Street, Covent Garden. 
