IOWA ACADEMY OF SCIENCES, 205 



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 Androporjon scoparius. 



DELTOCEPHALUS PECTINATUS N. SP. 

 (PI. xxll, 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 two and one-fourth times as long as next eye, one-half longer 

 than wide, sides fclightly acute, tip nearly pointed; front short, more 

 inflated than in rcRexus, similar to albidus; clypeus short, narrowed at 

 apex, width at base equaling length; lor« broad, sutures strong; pronotum 

 two and one-fourth times wider than long, truncate behind. Elytra less 

 flaring, slightly shorter than in reHcxns; 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 reHexus; 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 distiac'i line of separation of color when lighter below; front always 

 dark or fuscous to the base; tergum as in reSexus; 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; 

 pygofers 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, veiy slightly narrowing, obtusely rounding to truncate 

 behind; shorter than the pygofers. Described from numerous examples. 



Larvce very similar in form and ornamentation to reHexus; color, olive 

 green to fuscous, longitudinal stripes less di-stinctly 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 flaring, 

 giving it a more compact appearance. 



The first adults were taken May 26th, becomicg 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 

 larva3, 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 



