APPENDIX C. — IlJSECTS. SYl 



two, the intermediate ones being evanescent. In the former, tho 

 first and second (from the fold) unite at the margin, but in the 

 latter, the evanescent line representing the second reaches the 

 margin parallel to the first nervure. 



ORTHOPTERA. 



Ephippigera TriVAVENSis, Hald. 



Pl. X. Flo. 3. 



Robust, dull brown, beneath yellowish; head rough, antennae 

 deep set, filiform, shorter than the pronotum, inserted opposite the 

 lower canthus of the eyes, upon each side of a double vertical 

 frontal carina; labrum transverse, and with the palpi flavous. 

 Pronotum ample, coarsely scabrous, blackish, changing to yellowish 

 posteriorly ; elytra and wings rudimentary, the former gray, 

 mottled with black. Inside of the posterior femora and tibiae 

 black, the former interrupted near the apex. The posterior tibiae 

 have a row of spines upon each above. Length fifteen, antennae 

 six, pronotum seven, width four and a-half, elytra four, posterior 

 femora seven, and tibiae seven lines. Chihuahua. 



(Edipoda corallipes, Hald. 



Pl. X. Fig. 2. 



Yellowish-gray, conspicuously varied with brown, mostly in 

 blotches, and upon the elytra and exterior side of the posterior 

 femora. Vertex and pronotum scabrous and dark brown, the 

 latter margined with flavous, its surface nearly flat, and the medial 

 line but little raised. Angle of the elytra marked with a yellow 

 line ; a narrow line upon the internal margin. Wings bright yellow, 

 margined with black. Inside of the posterior femora, tibiae and 

 tarsi, bright vermilion, a paler tint extending to the outside of 

 the tarsi and lower half of the tibiae. Length twenty-four lines, 

 (two and a-half inches,) pronotum five, posterior femora ten, and 

 tibiae nine lines. 



This fine large grasshopper is probably the species which has 

 been destructive to vegetation in the Valley of the Great Salt 

 Lake. It is nearly as large as the destructive (Edipoda migra- 

 toria, (with which it is congeneric.) The last-named species is 

 known under the English name of migratory locust. 



