216 IOWA ACADEMY OF SCIENCES. 



specimens are in hand from the state of Washington. It is 

 readily recognized by its short vertex, elongate elytra, with the 

 central aateapical cell divided, and the presence of six round 

 black dots, a pair on the anterior margin of each, vertex, pro- 

 notum and scutellum; color, fuscous maculate. Ultimate ven- 

 tral segment of the female narrowing posteriorly, margin twice 

 indented, including a median obtuse tooth, outer angles round- 

 ing; male, ultimate segment slightly, angularly emaginate; 

 valve short, obtusely angled; plates narrow, acutely poiated, 

 equaling the pygofers. 



Larvae: broad, stout-bodied, with blunt, obtusely rounded 

 heads; color yellow, with a broad, black margin behind the 

 eyes. 



The life-history of this species has already been given. 

 Further observations during the past season confirm the idea 

 of two broods as follows: Larvas appearing about the first of 

 May and maturing before the middle of June; adults from the 

 first of June to the middle of July; the second brood of larvaa 

 appearing before the middle of July and mostly matured by the 

 third week in August, adults again from the second week in 

 August on through September. 



This species has a wide range in food habit and consequent 

 variability in its life-history. The limits given above are for 

 blue grass broods, where it is under nearly constant conditions 

 and seems to be reasonably definite in its appearance. Its 

 occurrence on annuals would be materially affected by the date 

 of their appearance. 



DELTOCEPHALUS WEEDI VAN D. 

 (Plate XXV, Fig. 2.) 

 Trans. Am. Ent. Soc, XIX, p. 306, 1892. 



This pretty little species has also, probably, a very wide 

 range, though only reported as yet for Mississippi. It also 

 occurs at Ames. 



Adults measuring about 3 mm. , with a bluntly produced ver- 

 tex, sides sharply concave, elytra slightly longer than the 

 abdomen, flaring; central anteapical cell divided, color testa- 

 ceous brown, with the anterior portion of the vertex and ner- 

 vures of the elytra light; four dark points on anterior margin 

 of vertex, front and venter dark; male plates short, together 

 nearly circular in outline. 



This species was taken at Ames in June, but no determina- 

 tion as to its life-history has been made. 



