SYNOPSIS OF THE GENUS CHLOROTETTIX 13 



process which is broadened toward the apex, and is two-thirds the 

 length of the notch; lateral margin of the segment rounding to 

 the acute lateral angles. Male valve appearing as a narrow 

 margin to the ultimate segment; plates sloping, broad at base, 

 slightly rounding, acutely pointed, exceeded by the pygofers. 



The species has a wide distribution having been collected in 

 Iowa (type) Colorado, Nebraska, Ohio, Wisconsin, Tennessee and 

 Florida. There are specimens at hand from all the localities 

 except the last one. Cotypes are in the collections of Dr. Herbert 

 Osborn and Dr. E. D. Ball. 



Chlorotettix unicolor (Fitch.) 



(Figs. 10: a, b, c.) 



Bythoscopus unicolor Fitch, Homop. N. Y. State Cab., p. 58, (1851); Lintner's 



9th Rept., p. 398, (1893); Walker, Homop., 4, p. 1161, (1852). 

 Jassus unicolor Ubler, Bull. U. S. Geol. & Geog. Surv., 3, p. 511, (1878); Prov. Pet. 



Faune Ent. Can., 3, p. 286, (1890). 

 Grypotes unicolor Uhler, Stand. Nat. Hist., 2, p. 246, (1884); V. D., Can. Ent., 21, p. 9, 



(1889); V. D., Psyche, 5, p. 390, (1890); Osb., Proc. la. Acad. Sci., 1, pt. 2, 



p. 12, (1892). 



Thamnotettix unicolor Harrington, Ottawa, Nat., 4, p. 32, (1892).. 

 Athysanus unicolor South wick, Science, 19, p. 288, (1890). 

 Chlorotettix unicolor V. D., Psyche, 6, p. 306, 308, (1892); Lintner's 9th Rept., p. 410, 



(1893); V. D., Trans. Amer. Ent. Soc., 21, p. 304, (1894); V. D., Bull. Buff. 



Soc. Nat. Sci., 5, p. 200, (1894); Gill & Bale. Hemip. Col., p. 103, (1895); Osb., 



Rept. Ohio Acad. Sci., 8, p. 68, (1900); V. D., Can. Ent. 44, p. 328, (1912); 



Osh., Maine Agr. Exper. Sta. Bull. 238, p. 144, (1915).; Sand. & DeL., Anns. 



Ent. Soc. Amer., 10, p. 92, (1917). 

 Chlorotettix vanduzei Bak., Can. Ent., 30, p. 219, (1898). 



According to the original description of unicolor, it is, "Green- 

 ish yellow immaculate; elytra hyaline; length, 0.28. Taken on 

 flowers and goldenrod." 



A more detailed description will help in the recognition of this 

 species. Resembles spatulatus in size and form, but female 

 genitalia without a spatulate process. Length, 7.5 mm. 



Vertex two and one-half times as broad as long, scarcely 

 longer at the middle than next the eye, anterior margin broadly 

 rounded. Front a little longer than broad, width at apex one- 

 third that at antennae. Cheeks narrow, but feebly angled below 

 the eyes, forming a very narrow margin beyond the lorae. Clypeus 

 about rectangular. Pronotum short and very broad, anterior 

 margin feebly, broadly rounded, sides short. Elytra long. 



