S. H. Scudder—Rocky Mountain Triassic Insects. 199 
ArT. XXV.—Triassic Insects from the Rocky Mountains ; by 
SAMUEL H. ScupDpDER. 
Ear.y in 1882, Mr. Arthur Lakes, Professor in the Colorado 
School of Mines, discovered a bed of plants and insects near 
Fairplay, Colorado, in rocks much older than any that have be- 
fore yielded insect remains west of the Great Plains; the two or 
three specimens he sent me were sufficient to prompt a more 
thorough exploration of the locality, which I was able to make 
the following summer, resulting in the discovery of a fauna 
and a flora of considerable interest. 
The plants have been studied by Mr. Lesquereux,* who pro- 
nounces the species, some thirty in number, but in a very frag- 
mentary condition, to belong to Permian types, and declares 
____ the evidence to be decisive on this point. 
€ animal remains consist almost exclusively of insects, ° 
the beds in which they occur to one of the Paleozoic series ; 
but the presence of the other forms, and even the character: . 
istics of those which are referable to Carboniferous and Permian 
e 
M pes the name of Palzoblattarie has been proposed, and all 
aleozoic cockroaches whose front wings are preserved (and we 
know them almost exclusively from these organs) fall into this 
*On some specimens of Permian fossil plants from. Colorado. Bull, Mus. 
Comp. Zool., vii, 243. | 
