13G PUOVEEDISGS OF THE SATIOXAL MISEVM. vol xx. 



/*. Sub^enital pliito of male very broail ai»i<-iillv, inMirly or quit*' aH l»rou«l 

 as loiiK. !>l»i<'a'b' y:<'ntriilly notched, tlion>;h v<ry tVebly ; fiirculu rarely 

 (and then but little) nion- than a tliiid th«- h-n^th of tht- Mii]iraanal ]>late: 

 hind tibiae UHualiy red, but Koiuetiiuea blue «)r green (21. August ipenuim 

 BericHj. 

 g'. Himl tibiae red. 



A'. Prozona <»f nuile Htib(|uadrate: tegniina very sh'nder, subeijual, 

 scarcely expanded on the eimta; furcula of male with straight sub- 



parallel forlis i>L'. vomptuH ( p. :{()2 ). 



h-. Pro/una of male distinctly longitudinal, much longer than its ba^al 

 breadth; tegmina of ordinary breadth and costal expansion, tapering; 

 furcula of male with arcuate, ^trougly divergent forks. 



1)3. coccintipeB (p. 303). 

 g-. Mind tibi.ie glauious. 



/t'. Furrula of m:ile not more than a third as loug as the supraaual 

 plate; tegmina lightly maculate or intnuiculate. 



J>4. anguHtipennia (p. 305). 

 hK Furcula of male more than a third as long as the sujiraanal plate; 



tegmina usually heavily nuK-ulate 5*."). impiger (n. .'506). 



f-, Furcula of male slight, the projecting portion not longer or scarcely 

 longer than the la.st dorsal segment from which it sju-ings. 

 /'. Subgenital plate of male broad, throughout broader than the extreme 

 base of the cerci ; apical jxtrtion of supraaual jdate suddenly ilepressed 

 just beyond the middle; cerci moderately broad, not nnnh narrowed in 

 the middle, more or les.s suddenly bent inward near tip, exteriorly suhate 

 at apex (21*. Packardii .series), 

 f/'. Interval between mesosternal lobes of nuile nearly or quite twice as 

 long as broad. 



/)'. Median carina of prouotum obsolete or almost obsolete on the pro- 

 zona, distinct but low on the metazona; extremity of male cerci 

 nearly plane exteriorly or merely dej)ressed withiu the margin; forks 

 of furcula conspicuously divergent. 

 V. Prozona ordinarily with a broad median dark stripe, made more 

 conspicuous by the much lighter colors on either si(ie, or else light- 

 brownish testaceous; antennae of male but little more than three- 

 fourths as long as the hind femora; hind tibiae blue or red. 



90. packardii (p. 300). 

 i-. Prozona with uniform dingy coloring on disk; antennae of male 

 almost as long as the hind femora; hind tibiae red. 97. foedini{]}.Sll). 

 h-. Median carina of pronotum t(derably distinct on the prozona, at 

 least anteriorly, distinct and moderately high on the metazona; 

 extremity of male cerci deeply sulcate exteriorly or else tumid; forks 

 of furcula parallel or only slightly divergent. 

 •'. Larger species; narrowest ]»art of interval between mesosteru.il 

 lobes of male narrower than the narrowest part of frontal costa ; 

 sides of head and prozona rarely with any black band; interval 

 between mesosternal lobes of female strongly transverse; hind fem- 

 ora red beneath ; hind tibiae stout 98. corpulentns d). SIS). 



i-. Smaller s])eeies; narrowest part of interval between mesosternal 

 lobes of male eijual to the narrowest part of frontal costa; sides of 

 head and prozona with a black band; interval between mesosternal 

 lobes of female subquadrate; hiud femora yellow beneath; hind 



tibiae slen<ler 99. couspiranff (p. 315). 



<^. Interval between mesosternal lobes of male subquadrate. 



100. Cijt>q)actu8 ( 1^.316). 



u. 



