IOWA ACADEMY OP SCIENCES. 
225 
Larvae were taken from Stipa spartea June 4th, and issued in 
the cages on the 6th. They were found up to June 10th, 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 the 
eggs. 
This species was never taken away from Stip)a, but occurred 
in such abundance that it over-ran the adjacent grasses. 
ATHYSANUS MAGNUS N. SP. 
(PI. xxvi, Fig. 3.) 
Form similar to Atliysanus 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 nearly parallel; ocelli distant from eyes; 
vertex four times wider than long; front four times as wide at ocelli as on 
clypeus, widest at antennae; antennae 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; tibise 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-half 
longer than breadth at base, margins thickened and fringed with stout 
hairs. Described from twenty specimens. 
It has been received from Texas, Kansas, Nebraska, Dakota, 
a.nd northwest Iowa, also collected sparingly at Ames, from 
Spartina cynosuroides exclusively. 
CHLOROTETTIX SPATULATA N. SP. 
(Plate xxvi, Fig. 4 ) 
Intermediate, in form and size between unicolor and galbanata 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 eje, anterior margin broadly rounding 
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