MORGAN HEBARD IO9 



Q Length of Length of Width of Length of Width of 



body pronotum pronotum tegmen tegmen 



Sherborn, Massachu- 

 setts (2) 12-13. 3 3-7-4-2 5-3-6 3-3-3-9 2.9-3.3 



Whitemarsh, Pennsyl- 

 vania (383)11.7-15 3-4-4I 4-9-5-9 32-6.31" 2.7-3.7 



Washington, District 



of Columbia (123)11.7-13 3-7-3-9 5-5-4 3-4-6 2.8-3.3 



Asheville, North Caro- 

 lina — 3-9 5 7 42 3.2 



Clayton, Georgia li 3-9 5-3 3-7 2.8 



St. Simon's Is., Georgia 12.3 3.8 5.6 3.4 3.2 



Opelika, Alabama. .. . 9.8 3.5 4.8 3.2 2.5 



Crawford Co., Indiana (2) 11. 9-12. 7 36-3. 7 5-7-5-3 3-'^-4-2 32-3 



Mountain Grove, Mis- 

 souri (11) 1 1. 5-14 3-''~i-4-2 5 4-5-9 3-7-4-3 3 -1-3 -2 



Bloomington, Iowa.. . li 3.8 5.5 4 3.3 



The \'ery large series of females before us shows interesting 

 variations in the tegmina. Slight variation in size is frequent, 

 while the margin of the discoidal field is sometimes nearly straight, 

 or often shows varying degrees of weak concavity. 



The optimum of the present species is apparently found in the 

 southern Appalachians; little geographic variation, however, is 

 apparent. 



The number of heavy spines on the ventro-cephalic margins of 

 the cephalic femora is variable, and of no diagnostic value in the 

 majority of the species of the genus. The following count, for 

 one hundred specimens of each sex of the present species, shows 

 the great instability here found. 



Number of Spines 2-5 3-3 3-4 3-6 4-4 4-5 4-6 5-5 5-6 5-7 6-6 6-7 6-S 6-9 1-4 



Number of Males o 2 4 i 9 25 4 26 15 i 7 3 i i i 



Number of Females. . . i 3 8 o 9 30 i 30 16 o i 1000 



Counts made for other species, but not included in the present 

 paper, show considerable varial)ility in each, but, as in the present 

 species, show a count of from four to six of these spines on each 

 cephalic femur in a large majority of the specimens. 



'"-Two sjiecimens, in this series alone, of the nine hinulred and seventy-two females 

 before us, show this very unusual tegminal length. The extreme distal production in 

 both is found only in the costal field. The average tegminal length for females of 



uhleriana is 3.5 to 4 mm. 



MEM. .\>L ENT. SOC. 2. 



