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Show 2C4 the band on the wings, and in the structure of the upper surface of the pronotura. 18. Hippiscxis neglectns ( CEdipoda neglecta Thom.). U , 1 9, Black-hawk, Colo., July 2; Manitou, Colo., July 14. I place this species temporarily in this group, to which it is somewhat closely allied, but from which it should doubtless be separated. 19. Hippiscus Haldemanni ( CEdipoda Haldemanni Scudd.). 2 9, Garden of the Gods, Colo., July 13. 20. Hippiscuscorallipes(( Edipoda corallipes Hald.). 1 <?, 1 9, Boulder, Colo., Jane 29. MESTOBREGMA ( fiiffTo;, fipiy/ ia) 7iov. gen. Somewhat allied toPsinidia Stal. Head large; face horizontal: vertex tumid, but not so elevated as in Psinidia, broad between the eyes, the fastigium quadrate, depressed, with very high and abrupt lateral and frontal carinas, which form the continuation of the sides of the eqnal, completely sulcato frontal costa; lateral foveolae small, depressed, rudely semicircular, the ocelli situated beneath their outer extremity; eyes small, moderately prominent, but little longer and not so broad as the spaoe between them; antenna ( 9) about as long as the hind femora. Pronotum posteriorly as broad as the head, somewhat constricted in the middle, the hind lobe scarcely longer than the front, the posterior border rectangular; median carina moderately conspicuous, slightly higher on the front than on the hind lobe, twice deeply cleft, the transverse sal-cations extending into the lateral lobes; lateral carinas of posterior lobe prominent; surface of hind lobe nearly flat, pretty smooth : front lobe with a few oblique rugae and small tubercles. Tegmina ana wings surpassing the abdomen, the axillary vein of the former free; hind femora as long as the abdomen. 21. Mestobregma Plattei ( CEdipoda Platlei Thom.). 19, Boulder, Colo., June 29. CIKCOTETTIX { xipxos, rim*) nov. gen. Somewhat closely allied to Ctyphippm Fieb., but differing considerably from it in geueral aspect. Head closely resembling that of Trim-rotropis St& l; eyes rather smaller, somewhat prominent, separated above by a space about equal to their width; antennae but little longer than the head and prothorax combined. Pronotum with the front lobe slightly narrower than the head, severed behind the middle; the hind lobe, which is about twice as long as the front lobe, broadening rapidly and greatly, slightly gibbous; the median carina distinct on the anterior portion of the front lobe, obsolete on the posterior portion, and inconspicuous on the hind lobe; front margin scarcely angulate; hind margin rectangulate; lateral carinse distinct on posterior lobe, but not prominent; surface slightly rugulose. Tegmiua and wings much longer than the body, the former with the intercalary vein approximating the radial at its tip, the axillary vein free; wings peculiar, being falcate ( Thomas calls it papilio[ ni] form), with more or less undulate margin; the faication arises from the prolongation of the pre- anal area and the fullness of the middle of the anal area; the principal veins of the latter are supported on either side by spurious veins, running very close beside and parallel to them, to which the trausverse veins are attached, while the spurious veins are themselves united to the principal nerrnres . by other cross- veins, forming a more or less regular net- work on either |