102 NORTH AMERICAN ACRIDIDAE (oRTHOPTERa) 



1916. Radinoiatum hrevipenne peninsulare Hebard, Ent. News, xxvii, p. 17. 



[Pineland on Pine Island, Charlotte Harbor, Florida.] 

 1920. Radinotatum brevipenne Blatchley, (in part), Orth. N. E. Amer., 



p. 197, fig. 74. 



This geographic race is fully discussed in the original descrip- 

 tion and co.mpared further with typical hrevipenne under the 

 treatment of that insect in the present paper. 



The small size of the Big Pine Key series has already been 

 commented upon. The series before us shows a still more im- 

 portant regional differentiation. The material from Miami to 

 Homestead, on the East Coast, and from Big Pine Key, has the 

 genicular angles of the caudal femora less elongate than is 

 normal in typical brevipenne. The material from Fort Myers to 

 Chokoloskee, on the West Coast, however, has these angles 

 decidedly more elongate than in typical brevipenne, as would 

 be expected in specimens showing more decided attenuation. 

 This feature indicates a slight divergence of development in the 

 race in the extreme southern portions of Florida, separated by 

 the Everglades and the Bay of Florida. 



Typical peninsulare appears adult throughout the year. Its 

 habits and color phases are in every way similar to those of the 

 more northern race. The typical condition has not been found 

 north of the northern limits of the Caribbean Pine. 



Specimens Examined, in addition to 319 previously recorded: 147; 86 males, 

 51 females and 10 immature individuals. 



Atypical brevipenne peninsulare 

 Florida: Kissiramee, JX, 10, 1917, (R. and H.; very abundant on wet 

 "prairie", very grassy with an abundance of water-loving plants), 30 c?", 

 19 9 , 2 juv. d", 1 juv. ? . Arcadia, IX, 12, 1917, (Rehn and Hebard; moder- 

 ately common in undergrowth of long-leaf pine woods, largely wire-grass, saw- 

 palmetto and bayberry), 12 cf, 5 9,1 juv. cf, 2 juv. 9. 



Typical brevipenne peninsidare 

 Florida: Fort Myers, IX, 13 to 15, 1917, (Rehn and Hebard: moderately 

 common, generally distributed through wire-grass of the Caril)bcan Pine 

 woods), 35 cf , 21 9,2 juv. cf, 1 juv. 9. lona, Lee County, IX, 13, 1917, 

 (Rehn and Hebard; generally distributed through pine woods), 2 cf , 2 9. 

 Boca Raton, III, 1, 1916, (Hebard; in field of scanty grass in sand region), 

 1 juv. cf . Ojus, II, 29, 1916, (Hebard; undergrowth of Caribbean Pine forest), 

 1 9 . Miami, II and III, (J. H. Comstock), 1 d', [Cornell Univ.]: Ill, 3, 1916. 

 (Hebard; undergrowth of Caribbean Pine forest), 6 cf, 3 9 . 



