SUBFAMILY II. OEDIPODIN.E. 299 



As pointed out by Walker, T. huroniana is closely related to 

 both T. saxatilis McNeill and vinculata Scudd. The principal dif- 

 ferences between it and saxa tills are given in the key. In vincu- 

 lata the disk of prozona is strongly convex and tectiform, the 

 front lobe of crest more elevated and much longer than the hind 

 one, these characters easily separating it from both our eastern 

 species. 



IV. CIRCOTETTIX Scudder, 1876a, 264. (Gr., "circle" + "locust") 



Rather large, compressed species, closely related to T rimer o- 

 tropis. the characters of vertex and frontal costa being nearly the 

 same as there; antenna? shorter, little longer than head and pro- 

 notuni together; disk of prozoua feebly tectiform, its length two- 

 thirds that of metazona, the latter wide, flat, with hind margin 

 right-angled or nearly so ; lateral cfirina? faint and rounded on 

 metazona, absent on prozona ; tegmina rather broad, much sur- 

 passing the abdomen, with intercalary vein close to radial at tip, 

 the axillary vein tree. "Wings peculiar (Fig. 106, 6), being fal- 

 cate with more or less undulate margin ; the falcatiou arising from 

 the prolongation of the pre-anal area and the fullness of the mid- 

 dle of the anal area, The principal veins of the latter are sup- 

 ported on either side by spurious veins, running very close beside 

 and parallel to them, to which the transverse veins are attached, 

 while the spurious veins are themselves united to the principal 

 nervures by other cross veins, forming a more or less irregular 

 network on either side of the principal veins." (Scndder.) Hind 

 femora short, slender, about reaching end of abdomen, male, fall- 

 ing short of it 3 5 mm., female; valves of ovipositor short, stout, 

 feebly exserted. Other characters as given in key. 



Kirby (1910) accredits 13 species to the genus, all trom the 

 western United States, the range of our only eastern species being- 

 given as "British America." 



130. CIRCOTETTIX VERRUCULATUS (Win. Kirtay), 1837, 250. Cracker Locust. 

 General color dark gray, often almost black. Lower part of face usu- 

 ally gray with fuscous dots; occiput and pronotum fuscous or very dark 

 brown with faint paler mottlings. Tegmina dark brown or black, some- 

 times immaculate, more often with a pale cross-bar just in front of middle 

 and another behind it; apical third subhyaline with paler mottlings. 

 Wings with basal third or more transparent with a yellowish tinge, curved 

 fuscous bar faint, narrow, widened behind, apical fourth hyaline, the ner- 

 vules and extreme tip fuscous. Front and middle femora annulated, hind 

 ones with outer face dull yellow crossed by two oblique fuscous bars; inner 

 face black with two yellow bars. Hind tibia* dull yellow, the knees and 

 apex fuscous, the middle sometimes tinged with that hue. Structural char- 



