NO .1124. XEriSIOX OF THE MELANOPLISCUDDEE. 243 



nun., female, 0.75 mm.; tegmina, male and female, 4 mm. ; hind femora, 

 male, 10.5 mm., female, 11.25 mm. 



Four males, 7 females. Siskiyou County, California (U.S.N.M. Eiley 

 collection); Edgewood, Siskiyou County, California (L. Brunei); Sis- 

 sous, Siskiyou County, Packard; Mount Shasta, California (L. Bru- 

 nei); Sbasta County, California, June, J. Behrens (same); Santa Cruz 

 Mountains, California (U.S.N.M. Eiley collection); mountains near 

 Lake Tahoe, California, September, Henshaw, Wheeler's Expedition, 

 1870. 



This species may readily be confounded with the following; it is a 

 little smaller and somewhat slenderer than M. borckii, and differs also 

 in the points mentioned in the table. 



61. MELANOPLUS BORCKII. 

 (Plate XVI, fig. 6.) 



Aeridium (Podisma) borcMi STAL, Orth. Eug. Res. (1861), p. 332. 



Podisma borckii WALKER, Cat. Derm. Salt. Brit. Mus., IV (1870), p. 718. 



Pezotettix (Mdanoplus) borcJcii STAL, Recens. Orth., I (1873), p. 79. 



Pezotettix borckii THOMAS, Rep. U. S. Geol. Surv. Terr., V (1873), p. 149. BRUNER, 



Rep.U. S. Ent. Comm., Ill (1883), p. 59; Can. Ent., XVII (1885), p. 12; Bull. 



Div. Eiit. U. S. Dep. Agric., IV (1884), p. 58. 



Y Of fully medium size, ferrugineo-fuscous, dull testaceous beneath. 

 Head scarcely prominent, flavous, often more or less clouded with fus- 

 cous, above always more or less brownish fuscous, occasionally punctate 

 or streaked with black, rarely with any sign of a postocular baud; 

 vertex very gently, tumid, feebly elevated above the pronotum, the 

 interspace between the eyes fully half as broad again (male) or twice as 

 broad (female) as the first an tennal joint; fastigium moderately decliv- 

 ent, sulcate throughout but more feebly in the female than in the male; 

 frontal costa fading before the clypeus, equal but for the slight narrow- 

 ing above, as broad as the interspace between the eyes, slightly sulcate 

 at and sometimes shortly below the ocellus, punctate throughout like 

 the rest of the face and genae ; eyes of moderate size, feebly tumid and 

 scarcely more so in the male than in the female, only a little longer than 

 the infiaocular portion of the genae; antennae luteous or rufous, becom- 

 ing dusky apically, slightly more than half (male) or about three-fifths 

 (female) as long as the hind femora. Pronotum distinctly enlarging 

 posteriorly especially in the female, of nearly uniform color but becom- 

 ing dull fusco-testaceous on the lower part of the lateral lobes, and 

 sometimes, and especially in the male, with a broad, dull piceous, post- 

 ocular baud confined to the prozona, the disk broadly convex and sep- 

 arated by a distinct and tolerably sharp an gulation, 'forming rather 

 distinct lateral carinae, from the gently tumid but otherwise subvertical 

 lateral lobes; median carina distinct, percurrent but feebler on the pro- 

 zona, and feeblest and sometimes subobsolete between the sulci; front 

 margin truncate or faintly convex, hind margin truncate or feebly 

 rounded, rarely subangulate; prozona distinctly (male) or feebly (female) 



