265 



side of the principal veins ; with this exception, the neuration of the 

 wing is unusually regular and scalariTorm, the veins of the apex resem- 

 bling somewhat their disposition in Ctyphippus. 



The type of this genus is CEdipoda undulata Thomas. (Edipoda sparsa 

 Thorn, also belongs here, and I have a third undescribed species of the 

 genus from Nevada, sent me by Mr. H. Edwards. 



22. Circotettix undulata {(Edtpoda undulata Thorn.). 1 <?, Manitou, 

 Colo., July 14. 



23. Trimerotropis citrina nov. sp. Ash-gray, blotched with dark fus- 

 cous ; foveolaj of the head moderately distinct, a slight, lozenge-shaped, 

 flat depression at the tip of the fastigium ; antennae yellowish-brown, 

 obscurely annulated with fuscous. Median carina of pronotum distinct 

 only on front lobe, and on its anterior i)art somewhat elevated, deeply 

 cleft by the transverse sulcations, and sometimes depressed below the 

 general level of the surface at the hindmost sulcation ; front lobe corru- 

 gate, hind lobe nearly flat, granulose, with a few small, scattered tuber- 

 cles, the posterior margin rectangular. Tegmina and wings extending 

 far beyond the abdomen, the former as in T. vinculata Scudd., but 

 much more uniform, the transverse ashen bands being more infuscated, 

 and very rarely so distinct as in that species ; wings rather pale lemon- 

 yellow at base, pellucid, with black uervules at apex, and near the middle 

 furnished with a broad, blackish, or very dark fuliginous band, shaped 

 as in T. vinculata^ but a little broader ; beyond it, half-way to the apex 

 of the wing, the space between the anterior two veins is more or less 

 distinctly castaneous. Hind femora as in T. vinculata, hind tibia rather 

 pale coral-red, becoming very pale at the base, the spines black-tipped. 

 Length (of average specimens), (?0.23'"™; 928.5™™5 of antennae, (?12, 

 JlO-a""'"; of tegmina, ^27.5™>", 5 Sl.o'""^; of hind femora, (?12.o, 915™"^. A 

 single male was taken at Denver, Colo., July 10. I have also specimens 

 from the lied Kiver of the North (Kennicott) to Texas (Belfrage, Boll). 

 Boll's specimens were taken in Dallas County, June 6. Belfrage found 

 the species '' common in sandy places" in October and November, and 

 a few also in June and July in the same State. The species seems to 

 vary somewhat, northern specimens differing from the southern in hav- 

 ing a paler band on the wings, the tegmina more distinctly fasciate, 

 and the disk of the pronotum more depressed at the posterior'sulcation. 

 It is closely allied to T. vinculata, but the color at the base of the 

 wings is deeper, the black band is broader, the tegmina are rarely so 

 distinctly fasciate, and the hind tibiie are red instead of yellow. 



24. Trimerotropis suffusa nov. sp. Color varying from blackish-brown 

 to very dark olive-brown above, the sides, "and of the head the face, 

 changing from livid below to brown above, all flecked heavily with 

 black dots and blotches, the general effect being a speckled gray ; au- 

 tennre very dark brown, faintly annulate with fuscous. Tegmina dark 

 brown, suffused with blackish clouds on the basal half, heavily flecked 

 with moderately large, quadrate, blackish-brown spots on the outer 

 half, the cross-veins here and there brownish yellow, Wings pale-citron 

 on the basal half, separated from the outer half by a nearly straight 

 line parallel to the body (when the wing is completefy extended) ; outer 

 half blacki!*h fuliginous, deepest at apex and next the middle of the 

 wing, and emitting a broad tapering shoot next the ulnar vein half-way 

 from the middle of the wing toward the base ; occasionally, the middle 

 of the fuliginous area is semi-pellucid; the middle half of the apical 

 four-fifths of the costal margin is blackish, sometimes as far as the ra- 

 dial vein : hind legs as in T. verruculata. Length (Utah specimen) of 

 body, 27"""; of anteniui^, 11""" ; of tegmina, 29"'™; of hind femora, 13.5™"'. 



