388 PROCEEDINGS OF THE ACADEMY OF [Sept., 



T. latifasciata from Utah is the same as this, and his name would have 

 precedence. However, as no Utah material is available I prefer to 

 use Saussiire's name, provisionally at least, for specimens from eastern 

 Colorado. 



The evidence given by Cockerell ^^ regarding the difference in color 

 characters of individuals of this species taken in coitu is especially 

 interesting in view of the value which has been attached to the char- 

 acters there mentioned, i.e., bands on the inner face of the caudal 

 femora, and the width and curve of the wing band. Not much lati- 

 tude is needed in these characters to connect forms like laticincta and 

 latifasciata and melanoptera. Gillette does not consider latifasciata 

 and laticincta separable from T. citrina.^* 



This species has been recorded from Fort Collins, Montrose, Grand 

 Junction, Denver, Baileys and Golden, Colorado, by Caudell. 



One of the more common of the larger prairie land species. The 

 flight of this insect was less vigorous than is usual in species of the 

 genus. 



Trimerotropis melanoptera McNeill. 



Colorado Springs, Colorado, Aug. 18, 1 d" . Knob Hill, Colorado 

 Springs, Aug. 17 and 18, 2 d^, 1 ? . Prairie land, Colorado Springs, 

 Aug. 18, 1 d". 



Two of these specimens agree well in the color of the tegmina with a 

 topotypic (Silver City) male, while three have the bars more prominent 

 and contrasting with the lighter base color. The metazona of the 

 pronotum is paler than the prozona in these three specimens, and in 

 two of them the contrast is as great as in T. monticola. The black 

 areas of the wings appear to be slightly less extensive than the 

 specimens described by McNeill. The senior author's T. snowi ^^ may 

 prove to be but a form of this with a less extensive black area on the 

 wings. From the material then in hand it appeared well worthy of 

 separation, but the additional material shows variability which 

 weakens its status. 



This species was scarce even on the prairie land which appeared to 

 be its favorite habitat. In habits it much resembled T. laticincta. 



Trimerotropis strenua McNeill. 



Salt Lake City, Utah, Aug. 13 and 14, 4 d", 8 9 . 



This species is very close to T. californica Bruner, and probably 



'^ Proc. Davenp. Acad. Sci. IX, p. 38. 



1^ Bull. 94, Colo. Agr. Exp Sta., pp. 35-36. 



15 Trans. Kansas Acad. Sci., XIX, p. 223. 



