98 



NORTH AMERICAN ACRIDIDAE (oRTHOPTERa) 



The extremes of the series show the width of the vertex contained, the 

 following number of times in its length: 



Males. Brevipenne brevipenne. Macon, 1.29; Thoma.sville, 1.2.3 to 1.24; 

 Hebardville, 1.18 to 1.44; Billy's Island, 1.34; Ocala, 1.3.5 to 1.37. Atypical 

 brevipenne. De Leon Springs, 1.53; Kissimmee, 1.5 to 1.74; Lakeland, 1.47 

 to 1.84; Tampa, 1.5 and 1.5; Arcadia, 1.46 to 1.77. Brevipenne peninsulare. 

 Fort Myers, 1.7 to 1.84; Fort Reed, 1.56 to 1.63; Miami Beach, 1.71 to 2.04; 

 Homestead, 1.6 to 1.83; Big Pine Key, 1.51 to 1.79. 



Females. Brevipenne brevipenne. Thomasville, 1.21 to 1.22; Hebard- 

 ville, 1.17 to 1.23; Jacksonville, 1.23; Ocala, 1.25 to 1.27. Atypical brevipenne. 

 Kissimmee, 1.36 to 1.54; Lakeland, 1.25 to 1.39; Arcadia, 1.31 to 1.41. Brevi- 

 penne peninstdare. Fort Myers, 1.45 to 1.52; Fort Reed, 1.31 to 1.37; Home- 

 stead, 1.43 to 1..59; Big Pine Key, 1.45 to 1.49. 



These proportions for brevipenne brevipenne are seen to be: cf, 1.18 to 1.44, 

 a mean of 1.31; 9, 1.17 to 1.27, a mean of 1.22. For brevipenne peninsulare 

 they are: cf, 1.51 to 2.04, a mean of 1.77; ?, 1.31 to 1.59, a mean of 1.45. 



The measurements serve better to separate the races of this 

 species than any diagnosis we could give. Though in general 

 appearance very different, careful comparisons of series show 

 both h. brevipenne and b. peninsulare to be subject to consider- 

 able individual variability. Only in the area of intcrgradation, 

 however, are individuals encountered in the same series referable 

 to both types. It is of interest to note that this area of inter- 

 gradation lies much more to the north on the East than on the 

 West Coast of Florida, apparently forming a broad oblique 



