
PRESS OF 
GEO. B. CRESSON, 
PHILADELPHIA. 

i e fa D 
i O 5 
те T i + Ла gall. ба, 
PREFACE. 
The twelve years which have passed since the publication of the 
Check List by Mr. G. R. Crotch have proved its usefulness to stu- 
dents of our fauna. By facilitating exchanges among collectors in 
different parts of our country it has made the diverse forms of our 
extensive fauna known in regions remote from their habitats. 
In the present’ List the families and genera are arranged strictly in 
accordance with the Classification of the Coleoptera of North America 
by Drs. LeConte and Horn (Washington, 1883), the species following 
according to the most recent studies. 
Synonyms are included only when necessary to connect the present 
with preceding lists. Species of uncertain value and position are 
added, unnumbered, at the end of the genera to which they are sup- 
posed to belong. 
Genera inserted without specific names are known to occur here, 
but the species are undetermined. 
Much of the synonomy in the present List is the result of & special 
study, chiefly by Dr. Horn, of the writings of the authors who have 
treated exclusively of the species of our fauna. In this manner the 
species of Beauvois (1805), Kirby (1837), Randall (1838), Newman 
(1838—42), Ziegler (1844-45), Bland (1862-64), Walker (1866) 
and Casey (1884—85) have been collated, and their value or synonomy 
determined frequently from the types themselves. 
It is my intention to prepare for the pages of “ Hntomologica 
Americana" annual supplements. І shall, therefore, be indebted for 
information concerning any errors or omissions which may be noticed 
in the present List. 
Owing to the length and the advantage of annotations the list of 
species erroneously accredited to our fauna will be printed elsewhere. 
In conclusion I would acknowledge my indebtedness to Dr. G. H. 
' Horn, whose kind interest and assistance have rendered the List more 
authoritative and valuable and very much lightened my work. 
SAMUEL HENSHAW. 
Boston, Sept. 15, 1885. 

