MORGAN HEBARD 



395 



Measurements {in millimeters) of extremes 



T .T f Length Caudal Length Wifltli Length of 



-, Length of of pro- width of of of caTKlal 



'-' body notum pronotuni tegnicn tegnien fi-niur 

 Great Barrington, 



Massachusetts 



(7) 16.2-17.2 4-4.1 2.2-2.4 4.8-5.2 2.3-2.3 8.7-9.2 



Derrick City, 

 Pennsylvania, 



type 17 4.2 2.3 5 2.4 9.4 



Derrick City, 



Pennsylvania, 



paratypes (32) . . 16.8-1S.3 4-4.2 2.3-2.4 4.5-5 2.3-2.5 9-9.3 

 Sounding Knob, 



Virginia (2) 16-17.5 4-4.2 2.2-2.3 4.4-5.7 2-2.7 9.2-10 



Cincinnati, Ohio. . IS.S 4.8 2.7 6 2.7 10.2 



Marion County, 



Indiana (10)... . 16.5-19.5 4.2-4.6 2.4-2.S 4.9-6 2.4-2.9 9.7-10.2 



Great Barring- 

 ton, Massachu- 

 setts 21 4.7 3.2 5.4 3 10.2 



Derrick City, 

 Pennsylvania, 

 allotype 21 5 3.6 5.1 3.3 10.8 



Derrick City, 

 Pennsylvania, 

 paratypes i^id) . . 19.4-22 4.6-5 3.1-3.6 4.2-5.8 2.4-3 9.4-11 



Sounding Knob, 



Virginia (2) ... . 22.8-22 4.6-4.9 3.6-3.2 5.3-5.4 3.1-2.8 10.8-10.9 



Marion County, 



Indiana (10)... . 22.2-24.3 5-5.6 3.5-3.8 5.8-6.3 3.5-3.8 12-12.2 



Not only does the series from Marion County, Indiana average somewhat 

 larger in individual size than any other, but the greatest recession in color 

 pattern is also shown. 



In the series of paratypes the cerci show the following variation, the general 

 type, however, remaining distinctive. Length ranging from one and three- 

 quarters to two and one-quarter times proximal width. Apex ranging from 

 very blunt to rather sharply rounded, median to meso-ventral in position. 

 Ventral margin occasionally showing a very broad concave curvature distad. 

 Depression of external surface distad subobsolete to rather strongly defined. 

 The contour of the cercus often shows slight irregularities and in a single 

 individual the cerci are rarely somewhat asymmetrical, one being slightly 

 longer than the other or having the apex narrower. 



In the eastern series a single specimen is before us, from North Adams, 

 Massachusetts, the cerci of which may be considered atypical in character, 



TRANS. A-M. ENT. SOC, XLVI. 



