THE CANADIAN ENTOMOLOGIST. 307 



brownish fuscous, interrupted on a distinct band across the second cross- 

 nervure and the first apical veinlet ; below dark, the lower half of face 

 light, with the sutures and a spot on the clypeus fuscous. 



Genitalia : female, ultimate ventral segment convex, one-third longer 

 than penultimate, posterior margins roundingly emarginate from the acute 

 lateral angles, produced on the middle third into a rounded process which 

 is triangularly notched at the apex, lateral angles light, median process 

 black. 



Described from three female specimens from Pullman, Wash. (C. V. 

 Piper). 

 Deltocephalus ordinahis, n, sp. 



Similar to collifius in form, but with a shorter vertex, vertex shorter 

 than in Mehhehneri. Pale straw yellow with brownish olive markings. 

 Length 3.5-4 mm ; width 1.5 mm. 



Brachypterous form : vertex slightly obtusely angulate, the margin 

 blunt and rounding, one third longer on middle than against eye, as long 

 as the pronotum, slightly wider than long ; face as in collimis, front rather 

 broad, lateral margins convex; pronotum broad, but slightly emarginate 

 posteriorly; elytra broad and short, exposing the two last abdominal seg- 

 ments, apex evenly rounding from both sides, the apical cells very short; 

 wings rudimentary. 



Macropterous form; vertex longer, right-angled ; elytra and wings ex- 

 ceeding the abdomen, apical cells long, the appendix present, central ante- 

 apical cell long and parallel margined. 



Colour : vertex with the lateral margins and a median stripe, widen- 

 ing posteriorly, pale straw yellow, the disc on either side brownish olive ; 

 pronotum with four brownish stripes ; elytra pale subhyaline yellowish) 

 more or less of the fuscous on the sides of the abdomen showing through; 

 face pale olive with lighter arcs, below pale yellow. 



Genitalia : female, ultimate ventral segment equalling the penulti- 

 mate, posterior margin roundingly emarginate for one-third the distance 

 from the lateral angles, then produced into a pair of slightly divergent, 

 acutely angular processes between which is a short rounding tooth. 



Described from six females from iMarshall's Pass and one from Ft. 

 Collins, Colo., all taken by Prof Gillette. 

 Deltocephalus paludosus, n. sp. 



Somewhat resembling auratus, but with the elytra flaring rather than 

 compressed. Colour lemon yellow in female, greenish yellow in male. 



