COLORADO LEPIDOPTERA. 
Clarence P. Gillette. 
Since entering upon my duties as Entomologist of this Station, 
I have kept records on all our captures of insects within the State. 
These records contain notes in regard to dates and localities of cap- 
tures, names of collectors, food-plants, altitudes, and such other data 
as might be considered of interest. 
There have been requests that these records be published for 
the information of those who are interested in entomology, but who 
cannot have access to our collections and records. Bulletin 31, gave 
our records upon the order Hemiptera, and in the present paper are 
given our records upon the order Lepidoptera, so far as the species 
Lave been determined. 
In this connection, I wish to state that I am greatly indebted 
to the following specialists for the determinations of the great ma- 
jority of the species here reported : Dr. J. B. Smith, Dr. C. H. Fer- 
nald. Rev. Geo. D. Hulst, Mr. David Bruce, and Dr. Henry Skinner. 
Opposite each species in the following list wall be found one or 
more of the Accessions Catalogue numbers. By looking up these 
numbers in the list of Accessions Catalogue numbers, following the 
list of names, the records of each will be found : 
