THE CANADIAN ENTOMOLOGIST. 343 



Deltocephalus caperatus, n. sp. — Resembling ll^ecdi, but with less 

 flaring elytra; anterior half of vertex black, with a white cross upon it. 

 Length 3 mm ; width 1.25 mm. 



Vertex slightly obtusely angled, slightly wider than its median length, 

 one-third longer on middle than against eye, rounding to the front with a 

 slightly produced apex ; front convex, rather narrow, lateral margins 

 rounding to the broad clypeus, suture between clypeus and front indis- 

 tinct ; elytra rather broad and stout, broadly rounding behind ; venation 

 strong, the central anteapical cell divided, outer sector of clavus tied 

 before the middle of the claval suture. 



Colour : vertex, posterior half pale yellow, with a fuscous dot against 

 eye, anterior half shining black, with a strong white cross in the middle, 

 the tip of the cross in a round white spot on the apex of the vertex, the 

 lateral arms also ending in round spots; ocelli in white spot.c, a yellow line 

 against each eye connecting them with the yellow posterior half of the 

 vertex. Pronotum and scutellum olive, with slightly fuscous markings. 

 Elytra olive subhyaline, the veins broadly white, distinct, narrowly fuscous 

 margined. Face black above, with light arcs, lighter below, a dark band 

 along the apex of front, a stripe on the clypeus, which widens apically ; 

 sometimes fuscous margins on loras and gen^e. 



Genitalia: ultimate ventral segment of the female twice longer than 

 penultimate, the lateral margins strongly emarginate from the base, the 

 lateral angles rounding, posterior margin twice incised, forming three 

 rounding lobes; beneath the ultimate segment, and visible as a triangular 

 lobe at each lateral angle, is a second membrane as in compadus. 



Described from three females ; one each from: Ray, Colo.; Stratton, 

 Neb , and Ames, Iowa. Readily recognized by the white cross in a black 

 field. 



Deltocephalus comatjis, n. sp. — Form and general appearance of 

 colonus, Uhl. Pale green, with dark spots on vertex, pronotum and 

 scutellum. Length 3 mm., width i mm. 



Vertex slightly wider than long, obtusely angulate before, but little 

 longer on middle than at eye ; eyes long and narrow, pronotum longer 

 than vertex ; over half its length within the anterior curve ; face rather 

 narrow, rounding ; genje narrow, straight beneath the eyes. Elytra 

 slightly longer than abdomen ; venation of the weak nigrifrons type. * 



Colour : vertex pale yellow, a pair of large round spots on the anterior 

 margin near the eyes, a small approximate pair at tip, another pair of small 



