REHN AND HEBARD 



237 



Length Length Length Length Length Length 



of of of of of of 



71 body antenna pronotuni cephalic median eaudal 



^ femur femur femur 



Crestline, Nevada 9 — 1.4 2 IS 7.2 



Crestline, Nevada 10 1.9 1.5 2.2 2 7.3 



Calient e, Nevada 11.1 — 1.5 2.2 2.1 7.8 



Prescott, Arizona, <2/pe 10.2 2.3 1.6 2.4 2.3 8.1 



Prescott, Arizona, paratype 9.2 1.8 1.5 2.3 2.1 7.4 



Prescott, Arizona, para7(//>e 11.5 2.4 1.7 2.7 2.4 8.6 



Prescott, Arizona, para/y/je 11 2.4 1.7 2.6 2.4 8.2 



Granite Peak, Arizona ...11.1 2.4 1.7 2.6 2.4 8.1 



Senator, Arizona 9.7 2.3 1.5 2.6 2.2 8.1 



Senator, Arizona 10.4 2.3 1.6 2.7 2.6 8.6 



9 



Crestline, Nevada 14.5 IS 2 2 1.9 8.5 



Crestline, Nevada 16 1.7 2 2.1 2.2 8.9 



Caliente, Nevada 13.3 1.5 1.7 2.2 2.2 9 



Caliente, Nevada 14.3 1 (i 2.1 2.2 2.2 9.3 



Frescoit, Arizona, allohjpe. 17 1.9 2.1 2.4 2.3 10 



Prescott, Arizona, para^j/jje 15 1.8 1.9 — 2.3 9.5 



Prescott, Arizona, />ara/i/pe 15 1.7 2 2.5 2.3 9.3 



Prescott, .\rizona, paratype 18.5 — 2.2 2.6 2.8 10 



Granite Peak, Arizona ... . 17.2 1.7 2 2.3 2.2 10 



Mount Union, Arizona 18.5 2 2.1 2.6 2.6 10 



Color Notes. — The material of this race exhibits the same range of color 

 variation foimd in M. c. californica. The base coloration exhibits a more de- 

 cided tendency toward ])inkish buff and i)ale i)inkish buff, and at times even 

 warm buff. The pale tones are more buffy and less reddish than in the typical 

 form of the species. Really dark colored males are seen only in the Crestline 

 series. Several uniformly colored ochraceous-buff and hght ochraceous-buff 

 females are in the series, one from Caliente, the other from Prescott, while others 

 from Cresthne, Caliente and Prescott approach this condition but have lateral 

 liars indicated to a greater or lesser e.xtent. Females are to a lesser degree 

 blackish than is true in j\I. c. californica, and the ''pejiiier and .salt" coloration 

 is less decided in intensity and frequency. 



Distribution. — This eastern race occurs at localities in the 

 Upper Sonoran Zone in southeastern Nevada and in central 

 Arizona; in the Meadow Valley and Juniper Mountains regions 

 of Lincoln County in the former state, and the Prescott region 

 of Yavapai County in the latter one. It is ciuite proliahle it ^vill 

 be found in suitable environments in the intervening country, as 

 conditions at one of the Nevada localities (Crestline) were very 

 similar to those foinid on the Coconino Plateau region of northern 

 Arizona. 



TRANS. AM. ENT. SOC, XLIV. 



