1916.] NATURAL SCIENCES OF PHILADELPHIA. 309 



This geographic race is found to merge with the more southern 

 race, agitator quadratus, along the fall line in North Carolina, this 

 being shown by intermediate material before us from Raleigh. These 

 races show little definite differentiation, but typical agitator may be 

 said to differ from agitator quadratus in the average smaller size; 

 tegmina which normally do not quite reach the distal extremity of 

 the abdomen, in the male with speculum normally lacking a trans- 

 verse vein and with length of same more nearly approximating its 

 width, in the female with veins normally more irregular and not 

 affording a pattern as generally longitudinal; the caudal femora in 

 length also average proportionately slightly less. 



A large series before us from other points in the southeastern 

 United States, particularly those on the Piedmont plateau, are 

 immature, and we are consequently unable to assign the individuals 

 properly. We believe, however, that agitator agitator occurs on the 

 Piedmont plateau at least as far south as Atlanta, Georgia. This 

 race is known to occur as far westward as the timbered portions of 

 eastern Nebraska. 



Hapithus agitator quadratus Sruddor. 



North Carolina. Florida. 



Wrightsville, IX, 7, 1911, (R. & H.), Jacksonville, (T. J. Priddey), 4 cf , 



10 d\ 15 9 , 1 juv. cf . 19, [Hebard Cln.]. 



Wilmington, IX, S, 1911, (H.), 1 cf, Atlantic Beach, VIII, 24 and 25, 1911, 



19. (R. &H.), 4 cf, 5 9. 



Lake Waccamaw, IX, 8, 1911, (R. & Grant, VII, 189S, 1 cf, 19, [Davis 



H.), 4 d", 4 9, 1 juv. 9. Cln.]. 



South Carolina. M ?™'J^^ T " SlosSOn) ' X *> 



19, [M. C. Z.]. 



Texas. 



Florence, IX, 6, 1911, (R. & H.), 1 cf , 



2 9,1 juv. 9 . 



Ashley Junction, VIII, 15, 1913, (R.), Doucette, VII, 24, 1912, (H.), 19. 



2 cf , 3 juv. cf , 5 juv. 9 . Dallas, (J. Boll), 1 cf , 1 9 , [M. C. Z.]. 



r . Kerrville, VIII, 17, 1912, (H.), 1 9 . 



uemaia - Flatonia, VIII, 20, 1912, (H.), 2 cf . 



Savannah, VIII, 14, 1903, (A. P. San Antonio, VIII, 16, 1912, (R. & 



Morse), 6 cf , 8 9 , 2 juv. 9 . H.), 2 cf • 



Isle of Hope, IX, 3, 1911, (R. & H.), Victoria, VII, 27, 1912, (H.), 8 cf , 



9 cf , 10 9 , 1 juv. cf , 2 juv. 9 . i 9 , 1 j uv . 9 . 



St. Simon's Island, VIII, 30, 1911, Brownsville, VII, 31, 1912, (PL), 4 cf, 



(R. & H.), 2 cf , 5 9 . " 39. 



Albany, VIII, 1, 1913, (R. & H.), pj per Plantation, near Brownsville, 



1 juv. cf • VIII, 3, 1912, (R. & H.), 1 cf , 6 9 . 



We have recorded above all of the previously unrec orded material 

 of this ~eographic race from within the United States before us, in 

 order to define more fully its known distribution. 



There is considerable variation in the coloration of the form. 

 Occasional specimens have the caudal femora strongly infuscated 

 21 



