IOWA ACADEMY OP SCIENCES. 179 



probably characterizes the same species, at least so far as we 

 know no other species which could answer their description 

 occurs.* If this is correct the synonym will stand. 

 Xerophloea viridis Pab. 



Cercopis viridis, Fah. Ent. Syst. IV 50, 13, 1794. 



Xerophloea grisea, Germar Zeits. F. G. Eatom. I, 190, 1, 1839. 



Xerophloea viresceiis, Stal. Ofv. Vet. Ak. Forh., 1854, p. 94, 30. 



Xerophloea turidis, Fabr., Stal. Hemiptera Fabriciana, I[. p. 59. 



Parapholis peltata, Uhler Bull. U. S. Geol. and Geog. Surv., Ill, p. 461, 1877. 



Xerophloea peltata, Uhler Stand. Nat. Hist., 11, p. 348. 1884. 



Professor Uhler, in the Standard Natural History (vol. II, 

 p. 248) gives the range of the species as from Massachusetts to 

 Rio Janeiro in Brazil, thus coveriag the territory indicated by 

 the three descriptions. 



GYPONA GERMAR. 



Although the Gyponas have never been recorded as grass- 

 feeding species the observations this season show that for one 

 of them at least this is an exclusive habit, and for others 

 apparently a normal one. 



The species are widely variable in color and size, and the 

 genus needs a thorough revision in order to reduce to consistent 

 species the long list of so-called species which has arisen from 

 the characterization of these numerous varieties. 



Structurally the species are very constant and present defi- 

 nite characters in the shape of the head, the venation and the 

 genitalia. 



GYPONA OCTO-LINEATA SAY. 

 Tettigonia octo-Uneata Say Corsp. Writ , II, 357. 

 Gypona striata Burmeister, Gen. Ins. Gen. 16, No. 9. 

 Gypona flavilineata Fitch, Homop N. Y., State Cab., p. 57. 

 Gypona quehecensis Provancher, Nat. Canad. IV, 353. 

 Gypona cana Burm, Gen. Ins , PI. 16, No. 10. 

 Gypona flavilineata, Spangberg, Spec. Gyponfe, p. 8. 



This is the longest and one of the narrowest species in the 

 genus, on account of its long, narrow elytra, much exceeding 

 the abdomen. It varies in size from large females eleven or 

 twelve mm. long by three mm. wide down to the smallest males 

 only seven or eight mm. long by two mm. wide. The vertex is 

 two-thirds as long on the middle as the width between the eyes, 

 front margin very thin, roundingly produced. Ocelli small, 

 slightly behind the middle of the vertex; elytra long and nar- 

 rowed to a blunt point behind. The venation is indefinite, con- 

 sisting of fine reticulations on the apical half, and sometimes 

 including the whole surface except the base of the costa. 



* A series of thirteen specimens of this insect from Cuba, kindly sent by Mr. Robert 

 Combs, shows most perfect agreement with Iowa specimens, and no oilier species of 

 the genus is represented in his collecting. 



