IOWA ACADEMY OP SCIENCES. 
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be found throughout the fall. One female, dissected October 
26th, showed three fully developed eggs and no smaller ones, 
probably indicating that the rest had been deposited before 
then. This species occurs well distributed over the prairies, 
but has not been found on the field of Andropogon scoparius. 
DELTOCEPHALUS PECTINATUS N. SP. 
(PI. xxii, Fig. 3 ) 
Form and color nearly of reflexus, slightly smaller; vertex 
distinctly shorter; face all dark. Distinctly separated by the 
venation and genitalia. Length, 3.50 to 4 mm. 
Vertex t«ro and one-fourth times as long- as next eye, one-half longer 
than wide, sides slightly acute, tip nearly pointed; front short, more 
inflated than in redjxus, similar to albidas; clypeus short, narrowed at 
apex, width at base equaling length; lorse broad, sutures strong; pronotum 
two and one-fourth times wider than long, truncate behind. Elytra less 
flaring, slightly shorter than in redexns; venation on corium similar; third 
apical cell smaller or only equaling the anal; veins on clavus not coales- 
cent; abdomen very broad, depressed. 
Color: Sordid yellowish-white above, markings as in redexas; the 
oblique line on anterior margin of vertex nearer edge, less distinct; elytral 
veinlets not as strongly margined. Below: Face usually all dark, at least 
no distinCi line of separation of color when lighter below; front always 
dark or fuscous to the base; tergum as in reddxus; venter usually darker. 
Genitalia: Last ventral segment of the female less than half as long as 
broad, nearly truncate behind, with four narrow black comb-like teeth; 
py gofers more than twice as long as breadth at base, maculate; male valve 
equilaterally triangular, one and one-half times as long as their combined 
breadth at base, very slightly narrowing, obtusely rounding to truncate 
behind; shorter than the py gofers. Described from numerous examples. 
Larvse very similar in form and ornamentation to redexus; color, olive 
green to fuscous, longitudinal stripes less distinctly marked; a white median 
stripe extending from vertex to tip of abdomen, widening on terminal seg- 
ment, lateral stripes very obscure, often appearing as dots on the abdomen; 
body shorter and stouter, vertex shorter and broader, the oblique markings 
in the pupae indistinct. 
This is a slightly smaller and darker species than reflexus, the 
vertex is less pointed and the elytra inclined to be less flaiiag, 
giving it a more compact appearance. 
The first adults were taken May 26th, becoming more 
numerous up to the middle of June, then decreasing in numbers 
into July. This species had not been recognized as distinct 
from the preceding until after the time for the first brood of 
larvse, so no observations were made upon them. The first 
larvae recognized as belonging to this species were taken August 
4th in a different locality from the preceding, and where reflexus 
