JAMES A. G. REHN AND MORGAN HEBARD 261 



sutural margin oblique from point of greatest width to the rather broadly 

 rounded apex; the venation represented by a coarse irregular network, in 

 which the six principal veins, and particularly the discoidal (though some- 

 what irregular), are apparent. Medio-longitudinal carina of dorsal surface 

 of abdomen decidedly weaker and interrupted in broader intervals distad 

 than in male. Penultimate tergite much less ample and a much weaker de- 

 velopment of the same type as found in that sex, the medio-longitudinal div- 

 ision being indicated only by a depression. Cerci small, elongate conical, 

 slightly upcurved. Ovipositor much longer than caudal femur, showing a 

 very faint upward curvature, a])ices of valves acute, median in position. 

 Subgenital plate simple, convex, lateral margins strongly convex to meso- 

 distal portion, the margin there deeply concave, the lateral apices thus formed 

 broadly rounded. 



General coloration shining black with conspicuous areas of reddish brown. 

 Male type with head black, the face suffused with buckthorn brown. Pro- 

 notum black, with metanotum russet. Tegmina immaculate russet. Ab- 

 domen dorsad black, the caudal margin of the penultimate segment and in- 

 ternal surfaces of the cerci russet. Ventral surface of abdomen mars brown. 

 Limbs with coxae and proximal half of femora black, remaining portions buck- 

 thorn brown, tinged with tawny distad, except foramina of cephalic tibiae 

 which are black and feet which are suffused with blackish. 



The female allotype is in every way similar except that the paler markings 

 are all russet, the ovipositor alone shading to ochraceous-tawny proximad, 

 the subgenital plate black, tawny meso-distad. 



The series shows various degrees of recession in coloration. Two have the 

 metanotum tawny, this running through the di.sk on the prozona and meso- 

 zona laterad of the median line. The tergites are each broadly margined 

 caudad with tawny, the tips of the cerci entirely tawny and the black of the 

 femora receding to the proximal two-fifths. In these the entire face is pale 

 buckthorn brown to the caudal portions of the genae. while the subgenital 

 plate is cinnamon brown. 



Two other males show more decided recession, as follows. Occiput and 

 lateral lobes of pronotum blackish carob brown (the former paler in one, 

 cinnamon brown mesad), face clay color, remaining portions of pronotum 

 cinnamon-brown shading to buckthorn brown caudad. Tegmina cinnamon- 

 brown, abdomen dorsad buckthorn brown, finely tessellate with blackish, 

 cerci buckthorn. Limbs buckthorn brown, with proximal portions of fe- 

 mora marked with black, this very weak on cephalic femora. 



The immature individuals at hand agree fully in coloration witli the m- 

 tensively colored adults. 



Measurements {in millinteters) 

 Caudal 

 Length of Length width of Length of Length of 

 body of pronotal tegmen caudal 



pronotum disk femur 



Mt. Whitney, California. 



type 



TR.\x\.S. AM. ENT. SOC, XLVI. 



22.8 4.7 4.;3 7.8 12.2 



