JAMES A. G. REHX 241 



across eyes, the genae being moderately l)ulging: structure of fastigium and 

 frontal costa as in male, but the whole structure broader in proportion. Eyes 

 distinctly smaller in proportion, in depth appreciably shorter than the infra- 

 ocular sulcus. Pronotum slightly longer in proportion to the head: caudal 

 margin of the disk with apex more rounded and lateral portions faintly arcuate- 

 emarginate. Ovipositor jaws moderately slender. Caudal femora with dorsal 

 lamellation more evident and more appreciably excised distad than in male. 



Measurements {in nnUit)ieters) 



G reatest 

 (caudal) 



width of Length of 



■71 Length of Length of pronotal Length of caudal 



O body pronotum disk tegmen femur 



Milford, Utah, type 17 .7 3.6 3.4 20 .4 10 .5 



Milford, Utah, paratype 18.2 4.2 3.5 20 . 2 10.7 



Milford, Utah, paratype 19.5 4.2 3.7 22 11.1 



Cima, California 19.4 3.9 3.6 20.6 11.2 



9 



Milford, Utah, allotype 32 5.5 4.9 24 . 5 13.7 



Milford, Utah, paratype 29 5.1 4.5 24 . 5 13.4 



Milford, Utah, paratype 31 5.3 5 26.8 13.5 



Cima, California 25.3 4.7 4 23.2 13 



Cima, California 26 5 4.3 25 .5 13 .6 



Bird Spring Mountains, Cali- 

 fornia 2415 5 4 5 24.5 12.7 



Color pattern of the type found in Mestohregma plattei, with sharply con- 

 trasted bicolored lateral lobes of the pronotum and Conozoa-like contrasted 

 barring on the costal half of the proximal three-fifths of the tegmina. Pale 

 base color ranging from pale clay color to light buff, occasionally in large part, 

 particularly on the head, hoary white; dark i)attern color ranging from mummy 

 bro^\'n to dark bone brown. Frequent specimens fron^ Milford show a castor 

 gray suffusion, to variable degrees, of the greater portion of the head and dor- 

 sum of the pronotum, or of the dark areas alone, and rarely, to an extent, on 

 the lateral lobes of the pronotum. The type shows a tendency in this direc- 

 tion on the dark areas of the dorsum of the head. The transverse dark infra- 

 antennal facial line is smoke black in the male sex, and variable in depth of 

 color, while mesad its costal portion is either lacking or more ventral in position 

 than laterad of the costa. In the female sex this bar is obsolete or subobsolete. 

 Eyes ranging from ochraceous tawny to deep mars brown. Antennae with 

 joints distad of the second fuscous, obscurely alternated (by segments) with dull 

 russet. Pronotum with dark angulate marking on lateral lobes in male sharply 

 contrasted, shining dark bone brown, much weaker in female; dorsum dull, 

 with little contrast. Tegmina with dark bars alwaj's .sharply contrasted 

 with pale interspaces; sutural section and distal two-fifths with numerous 

 areolate patches of the darker color. Wings with disk in yellow-winged 

 phase ranging from very weak marguerite yellow (type) to primrose yellow,' in 

 the red-winged phase it is coral red; wing-4)and dark bone brown, crossing the 



1^ Abdomen abnormally contracted. 



TR.\XS. AM. ENT. SOC, XLV. 



