202 



Orphulella pelidna Psinidia fenestralis 



Orphulella speciosa Hesperotettix pratensis 



*Hippiscus tuberculatus Melanoplus faseiatus 



*Hippiscus haldemanii ^Melanoplus angustipennis 



Spharagemon Wyoming- * 'Phcetaliotes nebrascensis 



ianum Conoeephalus robustvs 



Of the species known from only one of the three localities, 

 there are in Vigo county two, Ceuthophilus latens and uhleri, 

 inhabiting dry sandy ground; in the lake region there is just one 

 species, Gryllus arenosus, which seems peculiar to that region: 

 and in the Illinois locality twelve have been found, the range 

 of several of these species being extended to a very unexpected 

 degree by their discovery here. Their previously known range 

 is given in the appended list, which shows clearly the alliance 

 of this sand fauna with that of the Great Plains. 



Mermiria neomexicana. Wyoming toN. M., Neb. to Tex. "Rocky 

 Mts. to Miss. R." 



Mermiria bivittata. Fla., N. J., Kan., Utah, N. M., Tex., and 

 intervening states. Lower Austral (Morse), 111.? (McNeill). 



Eritettix virgatus. Tex., Ark. 



Amphitornus bieolor. "Mont, to Kan." A characteristic spe- 

 cies of the Great Plains ( Bruner). 



Hippiscus phmnicopterus. "Southern U.S. east of Great Plains." 

 Moline, 111. 



TrachyrhaeMs thomasi. "Upper Miss. Valley and Colorado." 

 S. 111. (Thom.). Ky., Ind. Classed by Blatchley as Austro- 

 riparian. Its records are confused with those of other spe- 

 cies, but it probably occurs also from Minn, to Neb. 



Campylacantha olivacea. Neb. to Tex. S. W. Ark. 



Campylacantha acutipennis. Tex., Kan. 



Hesperotettix speciosus. "Rocky Mts. to Miss. R." Neb. to Tex. 

 N. M. 



Melanoplus Ha nidus. Ariz., N. M., Tex., Kan., Col., S. W- 



Neb., Mont. N. W. 111. (McNeill ). 

 Udeopsylla robusta. "W. of Miss. R." Iowa (Usborn). 

 Gryllus per sonatus. Ariz., N. M., Tex., Col., Kan., Neb. 



