GEOLOGICAL SURVEY OF THE TERRITORIES. 721 



larger size than the rugosa, the wings yellow at base, and the inside of 

 the posterior femora generally a bright coral-red, the pronotuui some- 

 what more wrinkled and rugose than the Nebraska specimen, (which has, 

 as I should have stated, the posterior femora orange-yellow inside and 

 the tibiiP- yellowish, tinged with red ;) the spots on the elytra are more 

 broken up. In Utah, we meet with another variety which resembles 

 very closely the corcdllpes except that the wings are pale-red at base and 

 the inside of the posterior femora yellow. 



In consideration of all these facts, we are certainly juvstified in think- 

 ing it highly probable that these are but varieties of the same species, 

 the differences beiag attributable to the differences of climate and food, 

 those in the moister climate, where the vegetation is ranker and where 

 they are less exposed to the sun, being darker and "plumper" than those 

 found on the more arid plains of the West. 



(JE. Tiiowa, Thos. 



Female. — The central foveola of the vertex is not exactly quadrilateral, 

 but somewhat hexagonal. Parts of the mouth, pectus, and venter yel- 

 lowish-white. Fa6e, dirty brown; lateral carinte distinct, reaching the 

 corners of the face; cheeks, dusky or dark brown; from the ui3per 

 margin of each eye a i)ale stripe runs back to the prouotum; the pos- 

 terior part of the occiput fades, backward, from dusky to yellow ; pro- 

 notum dusky with paler spots. The angles (or longitudinal corners 

 when folded) of the elytra are marked with a narrow yellow stripe ; 

 the upper (posterior) narrow field dusky ; rest as described in re- 

 port of 1871. Posterior tibias bright blue, with an indistinct, i^ale 

 ring below the knee; apex black. Tarsi pale yellow. Wings pellucid 

 with a few fuscous dots near the apex; nerves aiid nervules of the apical 

 portion dusky ; rest pale or white. 



Dimensions. — Length, .87 inch; elytra, .86 inch; posterior femora, .52 

 inch ; posterior tibiae, .10 inch ; pronotum, .20 inch. 



Taken at Lincoln, Nebraska, August 3. 



(E. tenehroscij Scudd. 



Var. With disk of the pronotum pale, cinereous, Tomonotvs pseudo- 

 nietanus, Thos. 



Antennae fuscous, and considerably flattened toward the extremity. 

 The pale portions of the mouth and face are slightly tinged with pale 

 rufous. The disk or basal portion of the wings a very bright brick-red. 

 Posterior femora with three distinct white bands; posterior tibiae black, 

 with a white ring below the knee. v 



Taken at Lincoln, Nebraska, August 3. 



(E. verruculata, Kirb. 



In the southwestern part of Minnesota, (August 19,) I noticed quite a 

 number of individuals of this species sticking to the weeds along the road- 

 side. Supposing them to be alive, I stopped to collect some, when, to 

 my surprise, I found they were all dead; again and again I repeated the 

 experiment, but with the same result. All these appeared to be females ; 

 their colors as bright as though living. 



Stenobothrus macuUpennis ? Scudd. 



Female.— F'Ace dull, rusty yellow; cheeks and sides of the head brown, 

 darkest immediately back of the upper part of the eye, where it forms 

 an ill-defined stripe which tuus back to the pronotum. Occiput and 

 disk of the prouotum pale brown. 



The black or dark-brown stripe running back from the eye continues 



46 G s 



