MORGAN HEBARD 



365 



base, its dorsal margin concave ascendant then rounding without 

 angulation and becoming convex to the disto-ventral angle, which 

 is rounded subrectangulate ; ventral margin almost straight, 

 showing some concavity above dorso-proximal angle of subgenital 

 plate (or broadly and shallowly concave) ; distal portion (which is 

 sometimes slightly less than half of cercus) definitely bent inward 

 with external surface prominently impressed. Penis with lateral 

 margins of stout shaft meeting dorso-caudad without projections 

 to form a narrow cleft, proximal processes erect and tubularly 

 enfolding the first pair of central projections which project briefly 

 beyond them and have their subchitinous apices with external 

 margins curving to the sharp dorso-internal subrectangulate 

 apex, the second pair of central projections protecting the basal 

 portions of these as erect elongate flat shafts with rounded apices 

 reaching dorsad as far as the lateral enfolding sections. Sub- 

 genital plate broad, terminating at dorso-distal margin mesad in 

 a transverse rounded and slightly projecting apex (this individu- 

 ally varying from almost sharply conical and not transverse to a 

 pair of low rounded projections). 



Allotype. — 9 ; same data as type. [Hebard Collection]. 



Considerably larger and more robust than male. Vertex 

 broader with carinae and impressions of it and frontal costa 

 weaker. Prosternal spine considerably stouter with blunt apex. 

 Tegmina shorter in proportion to pronotal length (but individu- 

 ally also varying to slightly longer than pronotum and occasion- 

 ally attingent or subattingent only at widest point), dorsal and 

 lateral fields weakly defined. Ovipositor apices rather short and 

 stout, dorsal pair strongly curved, with dorso-external margins 

 bluntly toothed and two transverse rows of blunt teeth on dorsal 

 surface, ventral apices less strongly curved. 



rf 1 



Length 



of 

 body 



Length 



of 



pronotuir 



Caudal 

 width of 

 pronotal 

 i disk 



Length 



of 

 tegmen 



Length 



of 

 caudal 

 femur 



Red Canyon. 6700 feet. 



18. 



4.1 



2.7 



4. 



9.8 



Bryce. 8200 feet. 



16.8-18.8 



4.2-4.6 



2.3-2.7 



2.9-5.3 



9.-10. 



Near Midway. 9700 feet. 



18.-20.3 



5.-5.2 



2.8-3. 



5.-5.8 



10.3-10.4 



Duck Creek. 9900 feet. 



17.3 



4.9 



2.8 



5.7 



10.3 



Cedar Breaks. 10400 feet. 



17.3-20.8 



4.3-5.2 



2.6-3.3 



4.8-6.7 



9.5-11.7 



9 

 Red Canyon. 6700 feet. 



19. 



4.8 



3.1 



5.3 



10.8 



Bryce. 8200 feet. 



17.7-20.3 



4.-4.8 



2.7-3.2 



4.9-6. 



9.8-10.7 



Near Midway. 9700 feet. 



19.7-27.3 



4.8-6. 



3.-4.3 



5.8-7.3 



10.8-12.8 



Duck Creek. 9900 feet. 



20.-23.7 



4.8-5.4 



3.-3.8 



5.3-6.8 



10.7-11.5 



Cedar Breaks. 10400 feet. 



20.6-22. 



5.-5.2 



3.-3.4 



5.3-5.8 



9.9-11.3 



TRANS. AM. ENT. SOC, LX. 



