SYNOPSIS OF THE GENUS CHLOROTETTIX 15 



and striated, the striae running transversely on the anterior half 

 and longitudinally on the posterior portion. Male plates similar 

 to unicolor but not strongly narrowed nor produced, which gives 

 them a shorter appearance. 



Described from nine females and three males from Corvallis, 

 Oregon, collected and sent to me by Mr. F. H. Lathrop. These 

 were received too late to include genital drawings. 



In the series at hand the genitalia of the females are very 

 distinct from unicolor by the convexly rounded lobes which are 

 much longer and narrower than the concavely rounded or sinuate 

 lobes of that species. 



Chlorotettix viridius Van Duzee. 



(Figs. 11: a, b, c.) 



Chlorotettix viridia V. D., Psyche, 6, p. 309 (1892); Weed. Can. Ent., 26, p. 278, (1892); 



V. D., Trans. Amer. Ent. Soc., 21, p. 304, (1894); Bull. Buff. Soc. Nat. Sci., 8, 



p. 71, (1907); Bull. Buff. Soc. Nat. Sci., 9, p. 228 (1908); Osb., Kept. N. Y. 



State Ent., 20, p. 539, (1892); Metcalf, Eli. Mitch. Sci. Soc., 31, p. 26, (1915); 



Barber, Bull. Amer. Mus. Nat. Hist. 33, p. 26, (1915); DeLong, Term. State 



Ent. Bull., 17, p. 86, (1916). 

 Athysanus viridia Southwick, Sci., 19, p. 288 (1892). 



Form of unicolor and tergatus, but smaller, apple green in color. 

 Length, 6-7 mm. 



Vertex distinctly rounded on the anterior margin, slightly 

 longer on the middle than next the eye. Front broad and convex, 

 sutures curved outward a little below the antennas, clypeus broad, 

 almost rectangular; cheeks unusually broad, prominently angled 

 below the eyes, margin beyond the lorae narrow. Pronotum with 

 anterior margin broadly curved, posterior margin slightly sinuate. 



Color: Apple green, connexivum and sometimes the edge of the 

 dorsal segments washed with yellow; rostrum, base of antennae, 

 tarsi, spines of the posterior tibiae and the ovipositor, soiled white 

 or even fulvous. Elytra vitreous, slightly tinged with fulvous in 

 the male, or green in the female, nervures greenish. Wings white, 

 iridescent, nervures concolorous. Eyes dark. 



Genitalia: Last ventral segment of /the female broadly exca- 

 vated from the prominent lateral angles almost to the base, the 

 sides of this incisure interrupted at the middle by a short, obtuse, 

 blackish tooth. Py gofers slightly exceeding the stout ovipositor. 

 Male valve short and broad, shorter than the preceding segment, 

 broadly rounded. Plates nearly rectangular, transverse, a little 



