276 GEOLOGICAL SURVEY OF THE TERRITORIES. 



ridge somewhat broad, obtusely margined, expanded at the ocellus, ver- 

 tical, reaching the cross suture; lateral carinas distinct, reaching the 

 corners of the face. Antennas filiform, sub-planate. Pronotum sub- 

 cylindrical in front, flat on the posterior lobe, expanded posteriorly, not 

 constricted ; median carina, a raised line, cut by the cross incisions 1 

 and 3; posterior incision before the middle ; lateral carinse obliterated 

 in front, but distinct on the front of the posterior lobe; posterior lobe 

 densely punctate. Elytra and wings extend slightly beyond the abdo- 

 men. Posterior femora short, not reaching the extremity of the abdo- 

 meu ; inflated. 



Color (siccus) : Ash-colored ; vertex and posterior lobe of the pronotum 

 tinged with reddish brown. Elytra opaque and somewhat brownish at 

 the base, semi-transparent at the apex; dotted over with pale brown. 

 The wings, when fully expanded, present a very broad fuscus band across 

 the base, parallel with the body, the outer border lying a little beyond 

 the middle of the wing, (when thus expanded ;) a large triangular space 

 at the apex transparent, with dark and white veins. Posterior femora 

 spotted with black inside ; tibiae yellowish. 



Male : The male differs only in size, and in having the elytra crossed 

 by irregular brownish bands, somewhat as in Oe. aequalis, but less 

 distinct. 



Dimensions : Female — length, 1.38 inch ; to tip of the elytra, 1.58 inch ; 

 to tip of the pronotum, from the vertex, .45 inch; femora, .64inch. Male — 

 length, 1.10 inch ; to tip of elytra, 1.36 inch ; to tip of pronotum, .42 inch; 

 femora, .58 inch. 



Habitat: Found in Colorado and Wyoming; somewhat rare in the 

 former, but abundant in the latter. It varies considerably in color, 

 sometimes assuming a very distinct purplish tinge throughout, but 

 especially on the elytra and wings ; at other times a pale, dirty yellow, 

 with the spots on the elytra wanting. The purplish variety I observed 

 only in Wyoming, between Chugwater and South Pass. This species 

 belongs to that group of Oedipodes of which the Oe. aequalis (Say) may 

 be taken as the type; to this belong Carolina at one extreme, and tri- 

 fasciata at the other, aequalis, carlingiana, and perhaps cincta and some 

 others. 



Oe. neglecta, Thos. Syn., Oe. neglecta, Thos. (Proc. Acad. Nat. Sci., 

 Phila.,1870,p.81.) — Female: Much like Oe.corallipes, (Hald.,) being about 

 the size of the male of that species, for which it has doubtless often been 

 taken. In its carvings, as well as size, it comes very near Oe. mexicana, 

 (Sauss.) Vertex very broad, transverse, foveolate; the large central 

 foveola divided, by the recurving margins, into three contiguous 

 foveolae ; these margins, seen from the front, form a W, with a line 

 across the middle angle; lateral foveolae obsolete; frontal ridge bisul- 

 cate above the ocellus, sulcate below, expanded at the ocellus. Prono- 

 tum flat above and rough ; median carina a raised line, very distinctly 

 severed by cross incision 3, before the middle; incisions 2 and 3 come 

 together at the median carina ; anterior portion rugose; posterior lobe 

 covered on the dorsum with elongate tubercles, its sides granulose. 

 Elytra and wings extend beyond the abdomen. Antennas filiform, 

 reaching the extremity of the pronotum. Posterior femora about the 

 length of the abdomen. 



Color (siccus) : Dirty brown, with fuscus spots. Each elytron has a 

 narrow yellow stripe near the dorsal border ; base brown, fading toward 

 the apex, which is semi-transparent; marked with groups of fuscus 

 spots, which, at two points, are grouped so as to form irregular bands. 

 Wings yellow at base; a dark band of moderate width crossing just 



