NO. 1124. REVISION OF THE MELANOPL1 SC UDDER. 317 



punctate with fuscous, especially in the discoidal area where the puncta 

 are aligned with lutescent marks; wings moderately ample, hyaline, 

 the veins pale fuscous, becoming darker anteriorly and apically. Fore 

 and middle femora considerably tumid in the male; hind femora stout, 

 dull testaceous, very obliquely bifasciate with blackish fuscous, except 

 beneath, which is flavous; hind tibiae feebly valgate, bright red. the 

 short black spines with pallid bases, nine to eleven in number in the outer 

 series. Extremity of male abdomen somewhat clavate, a little recurved, 

 the supraanal plate subtriangular with acutangnlate apex, nearly plane 

 surface, apically stepped by a distinct transverse ridge just beyond the 

 middle, the median sulcus broad and shallow in the basal portion, 

 narrow beyond; furcula consisting of a pair of slight, distant, parallel 

 denticulations lying outside the ridges bounding the median sulcus of 

 the supraanal plate; cerci and infracercal plates entirely as in M. con- 

 spersus ; subgenital plate rather narrow, equal, not at all flaring, the 

 apical margin not at all elevated, well rounded, entire. 



Length of body, male, 21 mm., female, 22.5 mm.; antennae, female, 

 10 mm.; tegmina, male, 16.25 mm., female, 17.25 mm.; hind femora, 

 male, 11 mm., female, 12.5 mm 



Two males, 2 females. Dakota (U.S.KM. Biley collection) ; Gordon, 

 Sheridan County, Nebraska, L. Bruner (same). 



This species is closely related to the preceding, from which it differs 

 in the narrowness of the subgenital plate of the male and the 

 difference in the interspace between the mesosternal lobes. Its general 

 resemblance is very close. 



23. TEXANTJS SERIES. 



In this not altogether homogeneous group, the prozona of the male 

 is longitudinal, generally distinctly longitudinal, and the interspace 

 between the mesosternal lobes in the same sex is almost, or fully, or 

 even more than, twice as long as broad. . With the exception of the first 

 species, the hind margin of the pronotum is obtusangulate. The 

 antennae are variable. The tegmina are also variable though always 

 abbreviate, and in most of the species are longer than the pronotum 

 and overlap, but in the first they are shorter and distant. The hind 

 tibiae are red or glaucous and have nine to thirteen spines in the outer 

 series. 



The supraanal plate is triangular with more or less elevated margins 

 and distinct median sulcus; the furcula is reduced to small or even 

 minute denticulations; the cerci are large, constricted in the middle 

 and again expanded, more or less incurved and sometimes again 

 apically bent in the original direction; the subgenital plate is broad, 

 generally produced or elevated apically, the margin entire. 



There are five species, all occurring west of the Mississippi, except 

 one which is found in the upper Mississippi region; of the others two 

 occur in Texas (and one of them in Kansas also), a fourth east of the 



