NO. 1215. /,'/,; VISIOX OF THE GENUS TRIMKROTROriS—McNFALL. '^'2.1 



of the metazone decidedly obtuse angular, with the margins straight 

 and the tip rounded. Togniina longer and showing little contrast in 

 color. Wings moderately long, ])eing one and three-quarter times as 

 long as broad; disk greenish yellow or pale citron with the fuscous band 

 broad, the width being from one-tifth to one-fourth the length of the 

 wing, continued upon the posterior margin much more than half way 

 to the anal angle, spur short, extending less than halfway to the base; 

 apex hyaline without any fuscous cells. Posterior femora with the 

 inside yellow, crossed by three fuscous bands and sometimes a fourth 

 fuscous cloud near the base, lower sulcus yellow, with the subapical 

 fuscous band distinct, the median ones usually less distinct but always 

 present, outer face with mere traces of the usual bands. Posterior 

 tibiffi red, with an indefinite cloud of lighter color near the base 

 extending across the lower as well as the outer face. Length of l)ody, 

 male, 20 to 23 mm. , female, 30 to 32 mm.; length of tegmina, male, 

 27 to 28 mm., female, 32^ to 35 mm.; length of posterior femora, 

 male, 11 to 12 mm., female, loh; to KJ mm. 



One male, Maryland, Pergandc collector, U. S. National ^Museum; 

 one male and one female, Carrizo Springs, Texas, A. Wadgymar col- 

 lector, Bruner collection; numerous specimens from northwest Arkan- 

 sas in my own collection; Denver, Colorado, July 10, Red River of 

 the North, Kennicott collector; Dallas County, Texas, June 6, Ball 

 collector, and Texas, Belfrage collector, June, Jul}^, Octol)er, and 

 November, Scudder; Texas and Colorado, Saussure; Nebraska, Brun- 

 ner. This species, in its dull isabelline color, resembles TrimerotTojpis 

 mmritima^ and is easil}" mistaken for it where the two occur together. 

 That it should l)e found as far east as Maryland is somewhat unex- 

 pected, but since it is common in northwest Arkansas there is no 

 reason wh}' it should not be found in the mountainous districts of 

 Kentucky, Tennessee, the Virginias, and Maryland. 



LATIFASCIATA group. 



Color dull brown with slightly contrasting maculations. Size 

 medium or large. Frontal costa more or less sulcate with the carina 

 vanishing before reaching the chqieus; scutellum of the vertex about 

 as wide as long, very moderately or scarcely sulcate, equaling in 

 width the short (male) or long (female) diameter of the e3^e, which 

 is slightl}^ (male) or much (female) shorter than the genal groove. 

 Pronotum with the median carina Ioav even on the prozone and not 

 bilobate when seen from the side; metazone nearly or quite twice as 

 long as the prozone; lateral lobes without a tooth. Tegmina with the 

 bands well defined but rather faint and rarely obviously made up of 

 annul! or punctations; area of the cubital forks broad with several 

 series of polygonal cells; intercalary vinn separated from the median 

 by little (male) or considerably (female) more than its width. Wings 



