Nf..i2i5. REVISION OF THE GENUS TRIMEROTROl'IS—McNEILL. 447 



types in the U. S. National Museum, and in the same collection speci- 

 mens from Yollowstono. Montana. I have spocimons of perplexa 

 from C^hadron, Nebraska, determined by Doctor Brunei-. 



A careful examination of these specimens fails to show any coMstant 

 difference, and 1 am compelled to believe them sj'nonymous. Bruner 

 says of 2>(-''2^l<i^<^i ■ 



It produces a very decided clatter upon the \s\\\^. According to the panic author- 

 ity it is a Ijare-ground species, living ui)on stunted chenopodiaceie, which manages 

 to live in the alkali tiats, where it abounds. 



TRIMEROTROPIS PSEUDOFASCIATA Scudder. 



Trimcrotropix pseudofasciaia Scuddek, App. J. J. Ann. Kept. Chief P^ng., 1876, 

 p. 514. 



Size medium; color usually light Ijrown, rather strongly varied with 

 fuscous maculations. Frontal costa rather strongly sulcatc above as 

 well as below the ocellus, with the carinse gradually diverging from 

 immediately below the ocellus to the clypeus; scutellum of the vertex 

 much longer than wide, strongly sulcate with the median carina faint,, 

 but continued across the occiput to the pronotmn; ej^es decidedh^ 

 longer than the genal groove. Pronotum with the anterior margin 

 plainly angulate; median carina more than usually cristate, with the 

 anterior lobe of the prozonal crest only slightly longer than the pos- 

 terior lobe; disk of the metazone with a few larger granulations which 

 show a tendency to run together into lines; process of the metazone 

 rectangular, with the sides straight and the apex rounded; metazone 

 a little less than one and three-quarter times as long as the prozone. 

 Tegmina long and slender, with the usual bands distinct, l)ut obviously 

 composed of annular spots, the basal one with its inner margin dis- 

 tinguishable from the spots between it and the base of the wing; only 

 the apical third is distincth^ hyaline; area between the cubital forks 

 wide, occupied by several series of polygonal cells. Wing narrow, 

 twice as long as l)road, hyaline with the disk tinged with very dilute 

 dull 3'ellow, fuscous band represented only by a darkening of the 

 veins and occasionally by some smokiness in a few of the cells in area 

 usually occupied by the band. Posterior femora rather distinctly 

 banded on the outer face. Posterior tibia' obscure yellow with traces 

 of three brownish clouds, one basal, another near the middle, and a 

 third apical. 



Length of body, male, 22 nmi., female, 24 nnn.; length of tegmina, 

 male, 25 mm. , female, 27 mm. ; length of posterior femora, male, lOi 

 mm., female, 12.2 nun. 



Santa Cruz Island, ban Diego, Scudder; San Joacjuin Valley, 

 Coquillett. 1 have seen one of Scudder's tj^pe specimens in the U. S. 

 National Museum from Santa Cruz Island and have examined a nuile 

 of the typical specimens from San Diego collected by Palmer. 



