LAWSON: KANSAS CICADID^. 343 



Tibicen costalis' Stal, Hemip. Fabr., ii, p. 116, 1869. 



Tibicen septendecim Stal, Hemip. Fabr., ii, p. 116, 1869. 



Cicada septendecim Uhl., Stand. Nat. Hist., ii, p. 227, 1884. 



Cicada septendecim Lintn., 2n(i Kept. N. Y. St. Ent., p. 167, 1885. 



Cicada septendecim Ril., Rept. U. S. Dept. Agr. for 1885, p. 233. 



Tibicen septendecim Uhl., Trans. Md. Acad. Sci., i, p. 160, 1892. 



Cicada septendecim Marl., U. S. Dept. Agr., Div. Ent., Bill. n. s. 14, 1898. 



Tibicen septendecim Felt, N. Y. St. Mus. Memoir, 8, i, p. 231, pi. 46, fig. 2, 1905. 



Tibicina septendecim D.ist., Cat. Homop., Cicadidw, p. 125, 1906. 



Cicada septendecim Marl., U. S. Dept. Agr., Div. Ent., Bill. 71, 1907. 



Tibicina septendecim Van D., Cat. Hemip. N. A., p. 500, 1917. 



Tibicina septendecim Davis, Jl. N. Y. Ent. Soc, xxvi, p. 152, 1918. 



A medium sized black and orange species. Specimens at hand measure 

 from 28 to 30 mm. 



Color: Head entirely black except sometimes for a small orange med- 

 ian triangle at the posterior margin. The eyes are either black or orange 

 in the dead specimens. Pronotum black except laterally, the inflexed por- 

 tions being of an orange tinge. Sometimes the collar is faintly tinged 

 with the same color. Mesonotum black except for narrow lateral orange 

 stripes. Abdominal terga black, the conjunctivae often appearing orange 

 as does the posterior portion of the last segment in the male. The wings 

 have the costal margin and the veins distinctly orange basally, but 

 apically they become brown. The whole wing, especially basally and 

 apically is mere or less smoky. The W at the cross veins is quite promi- 

 nent. The basal areoles of the fore wings are a very dark brown. The 

 flaps are grayish, tinged with orange. Beneath, the insect is mostly black 

 but with at least the posterior margins of the abdominal segments nearly 

 orange and with the light color extending up the sides. Often the ab- 

 dominal sternites are entirely brown. The legs are an orange-brown, 

 striped with testaceous, the tarsi darker. 



Form: The following are the measurements in millimeters of the 

 specimens at hand : 



Length of body 28 to 30 



Width of head 8.75 to 9.25 i 



Expanse of fore wings 80 to 88 



Greatest width of fore wings 12.5 to 13.5 



Greatest width of operculum 3 



Greatest length of operculum 4.5 



The opercula are quite narrow, having the outer and posterior mar- 

 gins forming a semicircle, and their postero-mesal margins well separated. 



Genitalia: The supra-anal plate of the male has a very large median 

 projection. Viewed caudally its margins are inflexed below this median 

 tooth, and each bears near its middle two curving, mesally projecting, 

 finger-like processes and near the base a larger and more strongly haired 

 one. The uncus, viewed laterally, has the form of a triangle with its apex 

 bent strongly cephalad. Viewed caudally it has the form of two sclerites 

 extending downward from the anal tube, encircling the penis, and widen- 

 ing below it into two triangular processes which taper to acute apices. 

 The penis is usually strongly protruded from between the two parts of 

 the uncus and possesses terminally two very characteristic little sclerites 



