JAMES A. G. REHN AND MORGAN HEBARD 253 



sides of which would in part be formed by the productions. Cercus about 

 three times as long as basal width, the internal portion showing slight lamell- 

 ation which increases to distal three-fifths, widening in distal half of that por- 

 tion, thence narrowing more rapidly, the lamellation disappearing and the 

 apex rather heavily and bluntly rounded ; at the point of greatest width a 

 small stout tooth occurs on the internal margin, preceded by smaller irregular 

 teeth along the internal margin half the distance to the base of the cercus; the 

 cereal armament is thus of a type suggesting that found in species of 

 Eremopedes. Titillator represented by two very slender, moderately diverg- 

 ing, chitinous shafts, the external margins of which are rather coarsely ser- 

 rate, the apices of these serrations directed proximo- laterafl. Subgenital 

 plate with two weakly defined, heavj'- carinae, which converge weakly distad 

 to bases of styles. Styles very greatly reduced, represented by minute round- 

 ed projections not as high as wide, situated in sockets, between which the dis- 

 tal margin of the subgenital plate is angulate-emarginate at shghtly more than 

 a rectangle, with apex rounded. 



Ventral margins of cephalic and median femora unarmed. Caudal femora 

 with ventral margins armed with a few (one and one external and three and 

 four internal) minute spines. Genicular lobes unarmed. Largest (medio- 

 internal) spur of caudal tibiae nearly as long as dorsal length of metatarsus; 

 ventral pair of si)urs very small, the smaller not as large as, the larger little 

 greater than, the larger of the marginal spines. 



General coloration sayal brown, showing a microscopic and weak marbling 

 of bister, except on disk of pronotum, where this is subobsolete, and on median 

 portion of dorsal surface of abdomen proximad, where it is very weak. Brief 

 visible portion of tegmina with veins cream buff and interstices bister. Ab- 

 domen with proximal tergites suffused in large lateral areas with bister, the 

 dorsal margins of these sinuous on each side, adjacent to which the dorsal 

 portion of the abdomen is slightly paler than elsewhere in that section. 

 Ventral surface cinnamon-buff. Cephalic tibiae with suffusions of mummy 

 brown at foramina and near distal extremity, traces of such marking showing 

 distad on cephalic and median femora and median tibiae. Ventral s])incs of 

 cephalic tibiae, all spines of median tibiae and proximo-ventral spines of caudal 

 tibiae with flecks of bister at their bases. Distal tarsal joint of all limbs bis- 

 ter at base, tinged with this color distad. 



Length of body, 18.4 mm.; length of pronotum, o.S; length of metazona, 

 3.1; greatest width of pronotal disk, 2.S; total width of pronotum, 3.9; length 

 of caudal femur, 13.2. 



This interesting Decticid was found in a small area of drietl 

 yellow grass, apparently driven from sage iM'ush, growing in an 

 opening in the junipers. Intensive examination of the immediate 

 vicinity failed to locate additional specimens. The locaUty was 

 on the narrow summit of a ridge, somewhat aljove the middle 

 section of the area of juniper and pinyon, on the western slope of 



TRANS. AM. ENT. SOC, XLVI. 



