JAMES A. G. REHN AND MORGAN HEBARD 



287 



S. curvicauda laticauda 



Winter Park, N. C (1) 



Billy's Island, Ga (20) 



Albany, Georgia (1) 



Spring Creek, Georgia . (1) 



Length 



of prono- 



tum 



6.7 



6.4-7.3 



6.1 



6.3 



Length 

 of tegmen 



36.9 



35.8-39.7 



33.2 



39.1 



Greatest 

 width of 

 tegmen 



7.7 

 5-8.3 

 7.1 



7.8 



Length 



of caudal 



femur 



31.8 

 32-32.7 



28.7 

 32 



Length 



of subgeni- 



tal plate 



8.2-8.7 

 8.1 

 8.7 



Length 



of prono- 



tum 



Leniith 

 of tegmen 



Greatest 



width 

 of tegmen 



Length 



of caudal 



femur 



Length 



of 



ovipositor 



Wilmington, N. C (l)j 7 



Yemassee, S. C (3) 6.5-6.7 



Billy's Island, Ga (13)1 6.1-7.1 



Albany, Georgia (3) j 5.9-6.1 



Jacksonville, Florida.. . (4), 7.7-8.3 



39 j 7.6 

 36.5-37.8 7.1-7.5 



35.7-39 



36.3-38.8 



36.3-40 



7.2-8.3 



33.4 



31.6-32.5 



31.4-33 



6.7-7.9 ,30.3-31.4 



10.2 

 9.7-10.2 

 9.6-10.3 

 9.4-9.6 



7.7-8.3 29.8-35.210.1-11.1 



I I 



The ovipositor in c. laticauda averages 3.3 mm. in both proximal and 

 mesal width. 



The material before us from all of the localitie.s in Virginia 

 and North Carolina (excepting Wilmington and Winter Park), 

 from the Piedmont plain and mountains of South Carolina and 

 Georgia, from the mountains of Alabama and Tennessee, from 

 southern Arkansas and Oklahoma and from all of Texas as far 

 west as the species is distributed, is not typical of the present race. 

 The great majority of these specimens average nearer to it than to 

 curvicauda curvicauda,^^ this is least pronounced in the series from 

 northern Virginia, southern Arkansas and Oklahoma and from 

 Texas. The area of intergradation is consequently found to be 

 very wide in the present case. 



'^ Such an intermediate individual is the female recorded l)y the authors 

 from Raleigh, North Carolina, as »S'. curvicauda, Proc. Acad. Nat. Sci. Phila., 

 1910, p. 636, (1911). 



TRANS. AM. ENT. SOC, XL. 



(21) 



