342 THE CANADIAN ENTOMOLOGIST. 



white ; abdomen straw colour, with a transverse row of fuscous dots on 

 the middle of each segment, pygofers with a black mark above. 



Genitalia : ultimate ventral segment of the female as long as the 

 penultimate, the posterior margin slightly rounding, the disc strongly 

 elevated ; male valve very small, rounding, plates triangularly narrowing 

 half their length, then produced into bluntly-tipped points, the margin 

 fringed with long hairs. 



Described from a single pair taken at Fort Collins, Colo. The four 

 large black spots in a row on the margin of the vertex will readily dis- 

 tinguish it from any but nodivaga, from which the smaller size, narrower 

 face and longer elytra will at once separate it. 



Lonatura Jioctivaga, n. sp. — Form of sa/sura, but larger. Pale straw 

 colour, with four black spots on the vertex and two on the elytra. 

 Length, 9 5-5 nim., (^ 4 mm. ; width 1.5 mm. 



Brachypterous form : vertex slightly obtusely angled, one-fourth 

 wider than long, two thirds as long against the eye as on middle ; face 

 broad, slightly convex, front almost as broad as long, parallel-margined to 

 the antenna?, then rapidly narrowing, to the long parallel-margined clypeus. 

 Pronotum transverse, scarcely as long as the vertex. Elytra short, 

 obliquely truncate, covering only the first two abdominal segments. 

 Venation obscure, reticulate, especially along the clavus and apical margins 

 of corium. 



Colour : vertex creamy white ; a pair of black spots just back of the 

 apex, and a large pair between these and the ocelli, the median line, an 

 oblique dash on either side of the disc, and some irregular marks against 

 the eyes, olive. Pronotum creamy, with four olive stripes. Elytra 

 creamy, or olive, with light veins ; a black spot on the posterior margin, 

 and sometimes another between this and the scutellum. Abdomen 

 creamy, with olive stripes, or dark olive with creamy stripes. 



Genitalia : ultimate ventral segment of the female half longer than 

 the penultimate ; lateral margin roundingly narrowing ; posterior margin 

 truncate or slightly emarginate, with a slight, triangular, median tooth ; 

 ovipositor very long, extending beyond the pygofers ; male valve short, 

 rounding ; plates long, acutely triangular, the lateral margins slightly 

 concave, fringed with a single row of stout hairs. 



Described from numerous specimens from Stratton, Neb.; Lamar, and 

 Fort Collins, Colo. 



