March, 1922.] DaVIS : CiCADAS OF VIRGINIA. 43 



gust 13, one male; August 14, one female; August 15, two males; 

 August 17, one male, and August 20, one male. Nearly all of these 

 specimens were collected in the woods of mixed pines and oaks that 

 occupies the gentle rising slope back of the museum at Wingina, 

 though an occasional individual, as, for instance, the female paratype 

 shot by Col. Robinson's brother, Mr. C. Cabell Robinson, found its way 

 to the locusts and other trees surrounding the house itself. To the 

 south, across the James River, in Buckingham County, we did not 

 hear any robinsoniana at either Spear's or Willis's mountains, but we 

 did hear a number in the wooded sections nearer to the river. To the 

 north, in Nelson County, we heard robinsoniana in Johnson's Cove 

 near Elmington, in the first line of the Blue Ridge Mountains, and at 

 several places between there and the James River. 



Lately Mr. W. S. Hough, of the State Crop Pest Commission, sent 

 the writer a male of this species for examination, collected at Win- 

 chester, Frederick County, in the northern part of the state and on the 

 westerly side of the Blue Ridge. 



In habits robinsoniana, like linnet, sings mostly during the sunny 

 hours, but its long-drawn-out slow sape, zapc, zapc continued for from 

 one to two minutes is a very different performance from the more 

 hurried zegcr, ccgcr, zegcr of Unnci continued for but a short time. 

 The ::-zapc of pruinosa var. tvinncmanna is also a very different song 

 and continued but a short time in comparison to robinsoniana. Tibicen 

 pruinosa var. latifasciata sings like -mmicnianna, but it inhabits a belt 

 along the coast, and has the broad pruinose stripes each side on seg- 

 ment three in the male, while the female usually has three stripes near 

 the base of the abdomen, which will further distinguish it from 

 robinsoniana. In the introduction to this paper comment has been 

 made on the peculiar song of the species under consideration, and we 

 wish to make it plain that it is very different from that of any of the 

 other native species. All of the large-headed species (those having a 

 simple uncus) have a much more rapid song of short duration. As 

 has also been stated, we had no difficulty in separating by their songs 

 the seven species of cicadas singing about Wingina, and most distinct 

 of all was robinsoniana. It is indeed surprising that, on account of 

 this character alone, the species did not long ago attract the attention 

 of entomologists. 



