JAMES A. G. REHN 245 



Allotype. — 9 ; same data as type. [Hel^ard Collection.] 



Description of Allotype. — Differing from the description of the type in the 

 following noteworthy features. Size larger. Head with fastigio-facial angle 

 much less prominent in profile, rounded; facial line less retreating; ej'es less 

 jjrominent, in cephalic aspect not elevated dorsad of level of vertex, greatest 

 depth slightly less than that of infra-ocular sulcus. Pronotum with rugulosities 

 of metazonal disk more detached, individual and irregular than in male; 

 ventro-caudal portion of lateral lobes of pronotum more rounded and less 

 oblique truncate than in male. Tegmina surpassing the abdominal apex by 

 less than the length of the pronotal disk. Wing very faintly less than twice 

 as long as broad. Mesosternal lobes less obliquely arcuate than in male, the 

 medio-caudal angle more distinct, though arcuate. Ovipositor jaws relatively 

 short, well recurved, moderately compressed. 



Color pattern of the basic M. plattei type, but greatly modified by the 

 suppression of virtually all solid exposed dark markings, except the imdulate 

 dark line on the lateral lobes of the pronotum and reduced dark blotches on 

 the costal section of the proximal half of the tegmina. General color ranging 

 from warm buff to tawny, often light buff or even hoary white on the head, 

 ventral section of the lateral lobes of the pronotum and cephalic limbs. Dark 

 markings bone browTi to clove brown, the pronotal line somewhat shining. 

 Head with a sub-obsolete, fine postocular line and a transverse, weak vertex 

 line of darker, occasionally many cloudings and mottlings present on the genae, 

 occiput and face; eyes antimony yellow to yellow ocher, with several irregularly 

 marked oblique lines of Isrowii: antennae with distal half solid l)lackish brown; 

 proximad half of the general color, irregularly multi-annulate with blackish 

 brown except on the two proximal segments. Pronotum with median section 

 of disk occasionally weakly clouded with brownish, the caudal margin beaded 

 with, and the carinal and mesozonal elevations touched with, brown: lateral 

 lobes with dark undulate line indicated as distinctly in females as in males. 

 Tegmina with Conozoa-like patches of dark brown always evident, occasionally'^ 

 nearly confluent, usually separated by a pale interspace somewhat less than 

 their width, the dark patches not crossing the humeral trunk; distal half of 

 tegmina and discoidal and anal fields with scattered punctulations of dark 

 brown, which distad are areolate and rarely there disposed in an obscure 

 transverse fashion, in the anal field there rarely is a weak transverse barring 

 tendency in the disposition of the punctulations. Wings with disk jasper red: 

 wing-band bone brown, crossing the wing at or very slightly di.-^tad of the mid- 

 dle, narrowed and emarginate at the base of the spur, which is l)road and 

 extends about two-thirds the way to the base of the wing; peripheral margin 

 with band becoming obsolete half-way to the body: distal section of wing 

 hj'aline, with certain veins infuscate by pencilling or series of dots; costal 

 margin infuscate distad, from band to near the apex; proximad of same narrowh- 

 lined with disk color. Abdomen of general color, as a rule with a more yellow- 

 ish tendency; dorsum of abdomen frequently with proximal segments clouded 

 to a variable degree with dark payne's gray. Cephalic and median limbs 



1* In Grand Canyon female. 



TRAXS. AM. ENT. SOC, XLV. 



