March, 1922.] Davis: Cicadas of Virginia. 41 



191 5, female; August 8, 1916, male; August 16, 1916, male taken from 

 the cicada-killing hornet, Sphccius; August 19, 1916, male. The fore- 

 going were collected by Col. Robinson. In late July and the first days 

 of August, 191 6, the writer heard several winnemanna singing at Win- 

 gina, especially near evening, but failed to capture any. From July 11 

 to 19, 1917, the results were about the same, except that one was heard 

 singing during the progress of a thunder storm. On June 18, 1919, a 

 warm day, one was heard singing at evening close to the house. This 

 was an early date. Later they became more common. From August 

 2 to 14, 1 92 1, Col. Robinson and I made more of a business of collect- 

 ing cicadas, not only finding many winnemanna pupae on the trunks of 

 trees at evening, but also securing several with the shotgun. In all 

 we collected thirty-two specimens, twenty-four males and eight fe- 

 males, all from the trees about the house, for we found none and 

 heard none in the regularly forested areas a short distance away. 



2. Tibicen pruinosa var. latifasciata (Davis). 



Figured in Journal, N. Y. Entomological Society, March, 191 5, 

 PI. 2, fig. 3. 



The only Virginia record for this conspicuously beautiful insect is 

 a male from Revel's Island, October 12, 1915 (W. L. McAtee), collec- 

 tion U. S. Biological Survey. Revel's Island is one of the chain of 

 islands along the Eastern Shore of Virginia, a few islands south of 

 Chincoteague. 



The types and numerous paratypes came from Cape May County, 

 New Jersey, and as it is, also common in places and at times along the 

 coast of North Carolina, it will no doubt be collected in considerable 

 numbers in Virginia. The shining black tergum with the broad white 

 stripe each side on segment three, readily separates this insect from. 

 winnemanna. The song of latifasciata is a z-zape, z-zape, z-zape, 

 continued for a short time. 



3. Tibicen robinsoniana new species. PI. IV, figs, i and 2. 



Type male and allotype female, Wingina, Nelson County. Virginia, .August 

 3, 1921. Davis collection. 



Resembles Tibicen linnei, and Tibicen pruinosa var. winnemanna of the 

 same region ; it also resembles pruinosa of the central United States west of 

 the Allegheny Mountains. From linnei it differs in having the costal margin 

 of the fore wings evenly curved instead of being bent at the end of the radial 



