50.U24. KKVisiny OF TUF. MF.r.Aynrit^svfhnF.ii. \\\1 



(male) or feebly transverse (female), no longer than tlir tVeWly and finely 

 ru^^ulosopnnetate ineta/.ona. iMosternal spine moWeratrly lonjf and 

 slender, eonieo cylindrical, blnnt (male) or ftliort and stout. appressiMl 

 eoni<al,veiy blunt (female); intersjjaee between mesosternal IoIm's nnieli 

 less than twice avS lonjj: as broad imale) or transverse ( female i, the 

 uietasteinal lobes attinj^ent (male) or approximate (female). Tc;;riiina 

 Just reaching:: as far as the hind femora, rather slendei-, scaicely tapcrin^r, 

 distinctly and quadiatcly maculate in all but the apical fnurth of the 

 discoidal area: winj;s j)ellucid, not very broad. Hind femora obliquely 

 marl\e<l alternately with blackish fuscous and brownish testaceous, 

 showinj^ most distinctly (and sometimes only) on the upper half, the 

 lower half lijihter, beneath red, in tiie female sometimes i>aler, the 

 genicular arc piceous; hin<l tibiae bright red with a fuscous patellar 

 sj>ot, the spines black except at their very base, ten to twelve (usually 

 eleven) in nund)er in the outer series. Extrenuty of male alMlomen 

 elavate, consi<lerabIy upturned, the sui)raanal plate narrow, the sides 

 subi)araHel an<l broadly upturned over a little more than the basal 

 half, beyond triangular with rectangulate apex, the median sulcus very 

 deep and narrow between high and compressed walls, reaching nearly 

 to the tip, so that each side has bi'tween these walls and the elevated 

 margins of the plate a very pronounced suh'ation; furcula consisting 

 of a pair of strongly depressed, slender, i)arallel fingers, e(|ual and 

 scarcely juirted in basal half, beyond tai)ering an<l bluntly pointed, 

 reaching the middle of the supraanal i>late; cerci very broa<l, subequal 

 in basal half, then bent a little upward and feebly tapering but broadly 

 rounded apically,the whole obliquely vertical, straight and not incurved, 

 less than twice as long as broad, and shorter than the supraanal i>late; 

 infracercal phites thickened apically and a little surpassing the supra 

 anal plate, obli<juely truncate: subgenital plate greatly prolonged and 

 elevated ai>ically, the apical margin entire, well rounded, in no way 

 truncate. 



Length of body, male, 20 mm., female, 22 mm.; antennae, male, 7.~» 

 mm., female, 7 mm.; tegmina, male, 10 mm., female, l.l mm.; liind 

 femora, male, 11.5 mm., female, 13 mm. 



Four males, o females. Above timber, 11,000 to 1.3,000 teet, on Mount 

 Lincoln, Park County, Coloratlo, August 13. 



20. MELANOPLUS UTAHENSIS, new species. 



(Plat.- XI, fi;j. 10.) 

 MehiiiopliiM uiaheiiBts Hkcxkr!, MS. 



Yellowish brown. Head luteous, much clouded with light fusco- 

 olivaceous, the sumnut and a broad band behind the eyes very dark 

 fusco-olivaceous, separated by a luteous stripe; vertex gently tumid, 

 scarcely elevated above the pronotum, the interspace between the eyes 

 broad, fully as broad as the first antennal joint, the fastigium broadly 

 and shallowly sulcate excei)t at base; frontal costa broad, feebly 



