204 Journal New York Entomological Society, t^'o'- xxv. 



of the Buffalo Society of Nat. Sciences, June, 1912, and in the Cana- 

 dian Entomologist for November, 1914, that the genus as so restricted 

 does not include any of the original Linnean species of Cicada. 



Tibicen pruinosa Say. 



Wharton, Texas, June 24, 191 7, male (H. H. K.). 



Tibicen marginalis Walker (marginata Say). 



Wharton, Texas, June 24, 191 7, male, and Victoria, Texas, June 

 25, 19 1 7, male (H. H. K.). 



Tibicen superba Fitch. 



Wharton, Texas, June 24, 1917, male; Sutherland Springs, Texas, 

 June 26, 1917, male, and New Braunfels, Texas, June 28, 1917, female 

 (H. H. K.). 



Tibicen montezuma Distant. 



Comstock, Texas, July 3, 19 17, male (H. H. K.). 



This specimen agrees well with the figure and description in Biol. 

 Centr.-Amer., as does a male from Gatesville, Texas, July 16, 1888, 

 in the collection of the U. S. Nat. Museum. 



Tibicen inauditus new species. 



Type male from west of Vega, Oldham County, Texas, July 15, 

 191 7 (Miss McGill). Davis collection. 



A black and light orange or straw-colored species, with rather prominent 

 eyes, and a conspicuous pruinose spot on each side of the abdomen. 



Head above black with the following marks light orange-colored : a spot 

 on the rather prominent front, a triangular one just behind this, two small 

 ones (one larger than the other) above each antenna, and an irregular one 

 each side of the ocelli at the back of the head. Pronotum black with the 

 anterior margin faintly touched with light orange ; the posterior margin more 

 broadly so, the light band being about one half a millimeter in width. The 

 anterior angles are light orange, and the tops of the raised portions, occupy- 

 ing the central part of the pronotum, are orange-colored and darker than the 

 margins. Mesonotum black with a well defined pruinose stripe on each side 

 near the base of the wings. The hind margin is light orange including the 

 ridges of the elevated X. The central portion is occupied by two light spots 

 at the extremities of the X, and anterior to the depressions there are four 

 others, the two central spots being curved and the outer ones more rounded. 

 Tergum black with two pruinose spots at the base, one large one each side 

 below the tympanum, and the eighth segment also conspicuously pruinose. 

 The posterior edge of each segment is narrowly edged with light orange. 



