GEOLOGICAL SUKVEY OF THE TEREITORIES. 463 



species. Vertex broad; central foveola sub-quadrilateral, transverse, 

 its interior surface more or less interrupted by small tubercles ; the two 

 lateral foveolee distinct ; tip depressed, sometimes forming two small 

 foveolse, but tbese are irregular, sometimes running into one and some- 

 tim.es wanting. Frontal costa vertical, broad, expanding at tbe ocellus 

 and at tbe base, more or less sulcate. Pronotum rugose, tuberculate, 

 but not so rough as (E, Haldemannii. Posterior femora rather short, 

 and not so broad as in either of the two species just named. 



Color ^ (dried after immersion in alcohol.) — Reddish-brown. Elytra 

 brownish at the base, paler and semi-pellucid toward the apex, with 

 dim, brown, cellular spots scattered somewhat equally over it, growing 

 paler and dimmer toward the apex ; in some specimens these spots are 

 almost, and in others quite, obsolete ; in some cases they are quite dis- 

 tinct, somewhat fuscous and partially run together. The wings are 

 pale red at base, (but when living they are of a bright red :) a narrow, 

 somew^hat broken, cellular, dark band crosses beyond the middle, curving 

 round the posterior margin, decreasing rapidly ; it does not quite reacfi 

 the anal angle ; a broad ray of the same color runs up the front margin 

 to the base. Posterior femora dull yellow, with no distinct bands. 



Dimensions. — Length, 1.4 to 1.6 inches ; elytra, 1.25 to 1.3 inches ; pos- 

 terior femora, .7 to .75 inch ; posterior tiblai, .62 inch. 



Found in the upper i)art of Snake River Plain, near the mountain, and 

 in Southern Montana. I do not know where I first met with this spe- 

 cies as we moved northward, because for some time I supx^osed it was 

 the same as that before noticed under the name of (E. paradoxal Thos., 

 and therefore did not examine it closely ; so it is possible that I did 

 not obtain any specimens until I reached the mountains j but I am quite 

 confident I did not meet with it south of Market Lake, and that I did 

 meet with it on the north (Atlantic) slope of the range, and from there 

 to Virginia City in Montana. 



(E. longijpennis, nov. sp. 



Elytra and wings longer than the body ; the elytra spotted ; the wings 

 black or dark fuliginous at the base. 



Male. — The vertex not very broad ; central foveola elongate elliptical, 

 with a slight median raised line, and open in front ; frontal costa rather 

 narrow, slightly expanded at the ocellus, sulcate, not expanding below. 

 Median carina of the pronotum i)rominent, sub-cristate, as in C3. Caro- 

 lina, cut near the middle by the posterior transverse incision, each part 

 arcuate ; anterior margin somewhat angled, and extending slightly on 

 the occiput; the posterior extremity acutel^^ and rather shari)ly angled; 

 the disk of the posterior lobe smooth and apparently without i)unctures. 

 The elytra narrow, remarkably straight, the margins parallel; longer 

 than the entire body. Wings about the same length, and broad. The 

 posterior femora not channeled beneath. The cerci rather long, sub- 

 cylindrical, and terrete. Antennae passing the thorax. 



Color, (dried after long immersion in alcohol.) — Reddish yellow. The 

 head and pronotum, especially the dorsal portions, pale reddish, dot- 

 ted with imle brown. The basal portion of the elytra reddish-yel- 

 low, the apical portion pellucid ; marked throughout with dark brown 

 spots somewhat in the form of bands. The wings for a very small space 

 around the immediate base are transparent yellow; a triangular space 

 at the apex extending inward about one-third of the way to the base 

 pellucid, sprinkled at the immediate apex w ith fuscous dots ; the poste- 

 rior margin has a narrow pellucid rim ; the rest is of a dark fuliginous 

 color, which, when the wing is fully spread, ai)pears like a very broad 



