LAWSON: KANSAS CICADID^E. 



329 



Form : The following: are the measurements in millimeters of the 

 specimens at hand: 



Length of body 31 to 38 



Width of head 12 . 5 to 15 



Expanse of fore wings 90 to 105 



Greatest width of fore wing 15 to 19 



Greatest width of operculum 6.5 to 8.5 



Greatest length of operculum 9 to 14 



The opercula are distinctly longer than broad, slightly overlapping 

 medially, the lateral margins recurved, and the posterior margins evenly 

 and broadly rounded. 



Genitalia : Supra-anal plate of male roundly emarginate posteriorly, 

 without any signs cf a median tooth, the lateral angles strongly angulate. 

 Uncus, viewed laterally, is broadest at the base, curving, the apex obtuse. 

 Viewed caudally the general form is triangular, but the apex is quite 

 broad and almost truncate. The ventral piece has two short and stout 

 arms which are not deeply cleft. The last ventral segment of the male is 

 not quite twice as broad as long and is very broadly rounded cr nearly 

 truncate posteriorly. The pygofers of the female have a short median 

 spine which does not exceed the well-rounded lateral margins. The last 

 ventral segment of the female has the lateral margins straight, the pos- 

 terior margin with a rounded emargination reaching half way to the 

 base. The lateral pieces of the ovipositor have well-developed teeth or 

 ridges, about six of the thirteen on each side being prominent. 



Distribution: Our records indicate that this species is our 

 most widely distributed form in the state. It has been taken 

 in over thirty counties from all parts of the state. The records 

 from Russell and Riley counties are those of the Kansas State 

 Agricultural College. Those from Clay and McPherson coun- 

 ties are by Davis. Van Duzee records it from the following 

 other states : Missouri, Iowa, Nebraska, Arkansas, New Mex- 

 ico, Texas and Colorado. The following map shows its distri- 

 bution in Kansas : 



