236 NORTH AMERICAN EUMASTACINAE (oRTHOPTEKA) 



ticularly when viewed from the dorsum, and in the very much 

 more abbreviate caudal tarsi. From M. c. tamalpaisensis the 

 present race differs in much the same features as does M. c. 

 caMJornica, its relationship being more distant and in general 

 along antithetical lines. 



Tyjpe. — cf ; Prescott, Yavapai County, Arizona. August 21, 

 1917. (J. August Kusche.) [Hebard Collection, Type no. 

 481.] 



Description of T^jpe. — The features given are those diagnostic of this sex of 

 the race. 



Angle of fastigium in profile very faintly more acute than a right angle, when 

 seen from the dorsum the fastigium is broader and slightly less projecting than 

 in M. c. californica: facial line in profile with no appreciable concavity between 

 fastigial angle and insertion of antennae: eyes broad ovate in basal outline: 

 face shghtly broader than in M. c. californica: antennae with distal section more 

 depressed and distinctly clavate than in typical californica. 



Lateral lobes of pronotum slightly deeper in proportion to the length than in 

 M. c. californica. 



Cerci very faintly more sharply decurved distad than in M. c. californica, but 

 of the same type. 



Limbs slightly but appreciably shorter and faintly more robust than in the 

 typical form of the species. Caudal tarsi shorter proportionately than in M. c. 

 californica, the proximal joint appreciably shorter than the second and third 

 joints combined, the second three-fifths of the length of the third. 



Allotype. — 9; same locality as the type. August 24, 1917. 

 (J. August Kusche.) [Hebard Collection.] 



Description of Allotype. — The characters given are those diagnostic of this 

 sex of the race. Facial angle in profile differing from that of M. c. californica 

 in the same ratio as in the male sex (see figure 7) ; when seen from the dorsum 

 the fastigium is proportionately broader and shorter, the margin less regularly 

 rounded: face less elongate than in female of M. c. californica. Eyes in basal 

 outhne faintly broader than in the typical form of the species. 



Limbs appreciably shorter than in M. c. californica. Caudal tarsi but little 

 longer than one-third of the caudal tibiae. 



Paratypic Series. — We have selected as paratypes forty-three 

 males, and eleven females, taken at Prescott, Arizona, August 

 21 to 24, 1917, by J. August Kusche. 



Measurements {in millimeters). — These figures are of maximum and mini- 

 mum specimens and of others noteworthy for special features. 



