A PERMIAN INSECT FROM TEXAS 
By F. M. Carpenter 
Harvard University 
Tlie specimen described below was sent to me several 
years ago by Mr. Cliarles B. Read, of the U. S. Geological 
Survey, who found it in a collection of fossil plants. Al- 
though insects have previously been reported from the 
Permian beds of Texas, this is the first to be formally 
described. The fossil represents a new species and genus 
of the Order Protorthoptera. 
Family Ideliidse 
This family is known by three genera, Idelia Zalessky, 
Metidelia Martynov, and Sylvidelia Martynov, all from 
Permian strata of Russia. Related species of the family 
Lepiidee occur in the Elmo beds in Kansas, though the 
family Ideliidae itself lias not yet been found there. 
Ideliopsis, new genus 
This is related to Idelia and Metidelia, but the fore 
wing differs in having distinct cross-veins apically, in- 
stead of cellules, and in having the posterior branch of 
the media anastomosed proximally with CuA. 
Genotype : Ideliopsis ovalis, n. sp. 
Ideliopsis ovalis, n. sp. 
Figure 1 
Fore wing : length, 25 mm. ; maximum width, 6 mm. 
Anterior margin only slightly arched, nearly straight. 
Rs arises just proximad to the middle of the wing, and has 
three main branches and a terminal twig on R4 + 5. The 
base of the media is not preserved, but the anterior branch 
of M (possibly MA) is unbranched to about the level of 
the first fork of Rs ; it has four terminal branches. The 
main posterior branch of M (possible MP) is anastomosed 
with CuA until about the level of the orgin of Rs ; it 
diverges away and terminates in three branches. Cu has 
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