1922] Olsen: Cicadella of North America 359 



each one of these forms even though in some instances rep- 

 etition will occur. 



The range of this species, typical form, extends from the 

 Rockies about Colorado, east throughout Nebraska and Iowa 

 to Illinois, south-west to New Mexico and Arizona. In the 

 East it is represented by a single capture in Tennessee, De Long 

 1906, and another single example in the writer's collection from 

 La Grange, Georgia, 17, VIII, 1918, taken by Dr. A. H. Stur- 

 tevant. A quite northern record is Wisconsin, which is prob- 

 ably correctly identified by Saunders and De Long, 1917. 



Cicadella hieroglyphica var. dolobrata Ball, 1901. 



Shape and characters similar to that of typical hieroglyphica 

 but color darker, especially in the males, which range from all 

 black with but few light markings, to black specimens irrorate 

 with white on vertex and pronotum. 



The characteristic markings of the species are usually 

 obsolete in the males, but not so obscure in the females and 

 sometimes rather well defined. Their color is slate to nearly 

 black; I have never seen a female that would answer entirely 

 to the color description of this variety. 



Following is the result of the study of two collections : First 

 lot: Langdon, Mo. VII, 14, —VIII, 28, H. G. Barber. Seven- 

 teen specimens, nine males, (typical dolobrata) , eight iemoXes, 

 rather slate gray in general appearance, with a good deal of 

 light pattern in strong contrast to the markings on the 

 vertex and anterior part of the pronotum. They would very 

 well pass for Ball's "slaty form" but are undoubtedly the 

 females of the above mentioned males. The lot is fairly con- 

 stant and collected in a space of about six weeks. Second lot: 

 From "C. Mo. 96." (abbreviation for Central Missouri 1896?), 

 U. S. National Museum Collection. Ten specimens pasted on a 

 card, seven of which are typical dolobrata males, the remaining 

 three were females with vertex and pronotum as in the former 

 lot, but a shade darker on the elytra. These are almost indis- 

 putably males and females of the same brood. 



The distribution of this variety follows that of the typical 

 hieroglyphica except that it is not reported from as many places. 

 Dr. Ball, 1901, gives the same general distribution for both, 

 additional distributions are Olsen, 1918, Boulder, Colorado; 

 De Long, 1916, one specimen from Colliers ville, Tennessee. 



