Annotated List of Colorado Orthoptera 
From Material in the Collections of the Colorado Agri= 
cultural College and Agricultural Experiment Station. 
PART I. 
Including Families Forficulidae, Blattidae, Mantidae, Phasmidae and Acridiidae 
BY CLARENCE P. GILLETTE. 
INTRODUCTION. 
Since coming to Colorado about thirteen years ago, the writer 
has done what he could to make the rich and varied insect fauna of 
the State known to the world. First, the Cynipidse were published 
upon in the Canadian Entomologist and in Entomological News 
during the years 1892, ’93 and ’94. Then Bull. 31, “A Prelimi¬ 
nary List of the Hemiptera of Colorado,” by Gillette and Baker, 
was published by the Experiment Station in 1895. In 1898 Bull. 
43 was issued giving a list of the Lepidoptera in the College col¬ 
lection with the accessions notes upon them and also giving de¬ 
scriptions of a few new Jassidae from the State; and the same year 
the writer prepared a monograph of the “American Leaf-hoppers 
of Subfamily Typhlocybinse” which appeared in Vol. XX of the 
Proc. of the National Museum which included much Colorado ma¬ 
terial. When Prof. E. D. Ball came to this department as first 
assistant in 1897 he had already become a writer upon the family 
Jassidae and was encouraged to continue his systematic work with 
this group, with a special view of working up the Colorado fauna, 
and his articles since that time have added much to our knowledge 
of Colorado Hemiptera. Mr. PL S. G. Titus wrote his thesis for 
the degree of M.Sc. upon “Colorado Bees,” a bound copy of which is 
in the College library; and Mr. Titus also wrote numerous articles 
treating of Colorado bees that were published in the Canadian 
Entomologist. Our entire College collection of Colorado Coleoptera 
were sent to Prof. Wickham to be used by him in making out his 
list of Colorado Coleoptera which he published in the Canadian 
Entomologist. Many other papers have appeared from the pens of 
other entomological workers in which they report upon insects 
