MORGAN HEBARD 205 



unlike male, apterous, size much larger, form more broadly acute elliptical. 

 Dorsal surface finely roughened, clothed with very short, minute hairs, along 

 the margins these hairs being longer and heavier, particularly in the cephalic 

 half. Pronotum broad, cephalic margin arcuate at an angle of about ninety 

 degrees, caudal margin weakly produced mesad, with sides broadly and 

 weakly concave. Supra-anal plate transverse, weakly trapeziform; caudal 

 margin broadly convex with immediate apex transverse, truncate, showing 

 a very feeble indication of projection at each of the weakly defined, lateral 

 angles thus formed.'^ Limbs with armament differing from that of male 

 as given under key heading, as characteristic of genus. 



Measurements {in miUimeters) 



Length Length Width Length Width 



Tf of of of of of 



O body pro- pro- tegmen tegmen 



notum notum 



San Lorenzo, Coahuila, Mexico, /ypc 18.4 5 7^- 21.6 8.4 



Kits Peak Rincon, Arizona 18 5 7.7 23.6 8.6 



Kits Peak Rincon, Arizona 18 5 7.8 22.2 8.1 



Width Width 

 Q of of 



V meso- meta- 



notiim notum 



San Lorenzo, Coahuila, Mexico, r///o///;;f.. 17.7 6.1 8.6 10.3 11.3 



San Lorenzo, Coahuila, Mexico, paroY/ypc 18.8 6.1 8.7 10.8 11.2 



San Lorenzo, Coahuila, Mexico, po7Y;////)c. 16.8 6 8.4 10 11.1 



San Lorenzo, Coahuila, Mexico, /Krra//y/;c. 16 o.S 8 9.8 10.8 



Coloration. — Males. Pronotum bone brown, individually varying to 

 carob brown shading to hazel latcrad, excepting cephalic margin which is 

 in all broadly buffy. Tegmina transparent, tinged faintly with buffy brown, 

 with scattered minute transparent flecks of bone brown, which become nu- 

 merous proximad, clouding heavily the proximal portion of the anal fields, 

 a broad immaculate band running along the humeral trunk proximad in the 

 discoidal field. Head with occiput bone brown, this extending to labrum 

 in type, to antennal sockets in Arizonan males. Other portions of body 

 buffy, with a brownish yellow tinge. 



Females. General coloration bay, deepening to liver brown on pronotum, 

 lateral and caudal portions of mesonotum and mctanotum and caudad on 

 dorsal abdominal segments. Pronotum with a small, weakly defined, tri- 

 angular, yellowish suffusion on each side cephalad. Occiput and swollen 

 portion of face above labrum shining bay. Underparts buffy tinged with 

 yellowish brown, the abdomen shining, shading through burnt sienna to 

 bay distad on the slightly less smooth surface of the subgenital plate. 



" This type occurs also in nhni. 



1- The type has baen dried from some liquid preservative and the pronotum 

 has in consequence buckled somewhat. In life we believe this diameter 

 was about 7.5 mm. 



TRANS. AM. ENT. SOC, XLVI. 



