120 THE UNIVERSITY SCIENCE BULLETIN. 



Color: Pale or yellowish -green. Vertex with two oblique red lines, 

 nearly in line with a pair on pronotum which also bears a median basal 

 red line. Elytra with veins, except apical ones, yellow or red, with 

 black dots at end of claval suture, a pair near inner and outer margins 

 apically and sometimes one almost two-thirds back on costal margin. 



External genitalia: Female, last ventral segment twice as long as 

 preceding, posterior margin slightly rounding; acutely tapering pygofers 

 much exceeded by ovipositor, both pygofers and ovipositor with a few 

 stout spines. Male, last ventral segment broader and longer than pre- 

 ceding, widest posteriorly and with posterior margin broadly concave; 

 valve small and triangular; plates about half as wide basally as last ven- 

 tral segment, sinuately tapering to acute upturned apices, margined with 

 stout spines; pygofers broad, much exceeding plates, separated ventrally 

 at apex and covered with stout spines. 



Distribution: Seemingly more abundant than preceding 

 species. Specimens have been taken in Cherokee, Douglas, Mc- 

 Pherson and Pottawatomie counties. 



Hosts: Taken on grasses in rather open woods. 



Genus Parabolocratus Fieb. 



The members of this genus differ from the preceding genera 

 of the Dorijdiaria in not having foliaceous heads, which in- 

 stead are parabolic in outline in the female, produced angu- 

 larly, and in the male, wider than long. They are uniformly 

 greenish or yellowish-green species, with both brachypterous 

 and macropterous females and macropterous males. 



Three of the North American species should occur in the 

 state, two of which have been collected here. 



KEY TO SPECIES. 



A. Female vertex broadly rounded; male vertex with thin margins 

 often lined with black beneath. viridis. 



A A. Female vertex more or less angulate; male vertex with thicker mar- 

 gins and never lined with black beneath. 

 B. Female vertex thin-margined; males yellowish-green, over 5 

 mm. in length. flavidus. 



BE. Female vertex thick margined; male brownish-green, less than 

 4 mm. in length. bninneu.^. 



Parabolocratus viridis (UhL). 



Cllosnocratus viiidis I'hl., Bui. U. S. Geol. Geog. Surv.. iii, p. 4G"2, 1H77. 

 Gypona reverta (Uhler MS.), Hayden's Surv. Tenn., Rept. for 1870, p. 47-2, 1872. 

 Parabolocritux viridin Sign., Ann. Soc. Ent. Pr., ser. 5, ix, p. 275, pi. 8, fig. 30, 1879. 

 Selenocephalux cijpcrartf (Fitch MS.) Sign., Ann. Soc. Ent. Fr., ser. 5, ix, pp. 88, 27.'>. 

 1879. 



I'arabolocraluM viridUi Osb., I'roc. la. Acad. Sci., i, pt. 2, p. 175, 1892. 

 Parabolocratim viridis G. & B., Heniip. Colo., p. 84, 1895. 



I'lirabolocratvH riridin O. & B., Proo. Iii. Acad. Sci., iv, p. 189, pi. 21, fig. 1, 1897. 

 I'arnbtilncrntuM ririiUji Ball, Kept. la. Acad. Sci. for 1H99, p. 71, 1900. 



