IOWA ACADEMY OF SCIENCES. 225 



Larvse were taken from Stipa spartea June 4th, and issued in 

 the cages on the 6th. They were found up to June 10 th, when 

 they had all issued. Adults were taken through June and late 

 into July, but no second brood appeared, probably owing to the 

 ground having been mowed over June 27th, thus destroying th3 

 eggs. 



This species was never taken away from Stijm, but occurred 

 in such abundance that it over- ran the adjacent grasses. 



ATHYSANUS MAGNUS N. SP. 

 (PI. xxvi, Fig. 3.) 



Form similar to Athysanus argentatus Fab., but still larger. 

 The largest species in the genus. Ashy, with transverse light 

 bands on head and pronotum. Length of female, 8 to 9 mm ; 

 width of eyes, 2. 50 to 3 mm. ; male smaller. 



Head wider than the pronotum, short, scarcely exceeding' half its length; 

 anterior and posterior margins nearlj- parallel; ocelli distant from eyes; 

 vertex four times wider than long; front four times as wide at ocelli as on 

 clypeus, widest at antenna;; antennfe small, short, inserted under a small 

 ledge; clypeus spatulate; genae broad; pronotum nearly three times wider 

 than long; elytra strong, broadest at base, without an appendix, two ante- 

 apical cells nearly equal in size, four terminal cells and one costal cell. 



Color: Vertex light yellow with an arcuated line between the ocelli; 

 face finely irrorate with brown, becoming darker below; antennal pit black; 

 pronotum fuscous, margins darker, a broad light yellow transverse band 

 just before the posterior margin; elytra, nervures brown, margined with 

 light, disk of the cells finely irrorate with fuscous, costal margin broadly 

 cream colored: tergum with a dark median stripe; venter brownish; femora 

 mottled with brown; tibiae black lined. 



Genitalia: Ultimate ventral segment of female slightly longer than 

 penultimate, strongly notched in middle, broadly, rather acutely lobed 

 either side, lateral angles rounding, slightly exceeding median lobes: male 

 valve small, triangular, one-half the length and two-thirds the width of 

 the ultimate segment; plates together long triangular, about one-h&lf 

 longer than breadth at base, margins thickened and fringed with stout 

 hairs. Described from twenty specimens. 



Id has been received from Texas, Kansas, Nebraska, Da.kot^, 

 and northwest Iowa, also collected sparingly at Ames, from 

 Spartina cynosuroides exclusively. 



CHLOROTETTIX SPATULATA N. SP. 

 (Plate xxvl, Fig. 4.) 

 Intermediate, in form and size between unicolor and galhar ata but 

 more distinctly green than in either species. Length, 7 mm; width, 1.75 

 mm. 



Vertex two and one-half times wider than long, margins parallel or 

 slightly longer on middle than next eye, anterior margin broadly rounding 



