g§2 ZOOLOGY— INSECTS. 



Southeastern Idaho ; but I have unintentionally omitted to mention this 

 locality in my Synopsis. I have also traced it east to Southern Illinois ; 

 and from this collection I find that it extends into the borders of Nevada 

 and Arizona. 



This is one of the most unvarying species in reference to its charac- 

 teristics I have ever had the pleasure of naming. The unvarying markings 

 and carvings of the vertex confirm the propriety of selecting these as 

 specific characters. 



It approaches very near to Stal's Trilophidia, and probably belongs 

 to that genus; otherwise it also will require the formation of a new genus, 

 as it evidently does not belong to GSdipoda as restricted. Dr. Brunner de 

 AVattenwyl thinks this and also OE. montana and (E. corallipes should be 

 placed in Lepras. 



OEDIPODA HAYDENII, Thos. 

 (Edipoda haydenii, Thos., U. S. Geol. Snrv. Terr., 1871, 4G0.— Id., Synop., 120. 



I find no specimens in the collection, but mention it here to state that 

 it will have to be transferred to Stal's new genus Cosmorhyssa, which is dis- 

 tinguished by the numerous elongate tubercles or short carinse on the 

 posterior lobe of the pronotiun, and by the character of the vertex and 

 frontal costa, as given in my Synopsis (p. 120). This species should, there- 

 fore, hereafter be known as Cosmorhyssa haydenii, Thos. 



OEDIPODA EENESTRALIS, Serv. 



This lias been transferred to Psinidia, Stal, in which he also places 

 two new species — P. capita and P. fuscifrons — from Texas. It is probable 

 that my GE. kiowa will also fall in this genus. 



OEDIPODA MARATIMA, Harr. 



This is now, according to Stal, Trimerotropus maratima. It is not 

 found in the collection, but is mentioned here to show in what genus it 

 belongs. Where no remark is made to the contrary in speaking of other 

 species which Stal's arrangement affects I accept the change, and shall 

 hereafter adopt tin- now generic name. 



