130 



decreasing lapidly, and not quite reaching the anal angle'; a broad ray of the 

 same running up the front margin to the base. Posterior femora dull-yellow, 

 with no distinct bands. 



Diviensions. — Length, 1.4 to l.fi inches; elytra, 125 to 1.3 inches; 

 hind femora, 0.7 .to 0,75 inch ; hind tibiae, 0.fi2 inch. 



Southern Montana, Southeastern Idaho (Thomas). 



I have not seen the male. 



ffi. coralHpes, Hald , Stansb. Rep. Salt Lake, 371, PI. x. Fig. 2. 



Female. — Very closely allied to (E. haldemanii, from which it may be 

 distinguished by the following characters : The characters not given are as 

 in that species. Central foveola of the vertex very shallow, less deflexed, 

 more rounded ; frontal costa very slightly sulcate at the ocellus. Antennae 

 slightly flattened ; the joints sub-distinct. Disk of the pronotum rather less 

 rugose, the tubercles not so high, but the sides equally rugose. The depth of 

 the head and thorax rather greater in this than in the former species. Yellow 

 stripe of the elytra along the dorsal angle more distinct ; brown below this 

 stripe not so distinctly separated into spots. Basal segment of the abdomen 

 with a sharp, somewhat elevated carina. The mouth-parts not bent so hori- 

 zontally backward toward the breast. 



Males with a more compressed tliorax, the sides of the pronotum being 

 perpendicular and nearly smooth ; disk less rugose than in the female. An- 

 tennae large, flattened ; joints short and distinct. Central foveola of the ver- 

 tex very shallow, sub-hexagonal, with a slight median carina along the middle 

 of the posterior half 



Dimensions. — 9 Length, 1.75 to 2 inches; elytra, 15 to 1.7 inches; 

 hind femora, 0.85 to 0.9 inch; hind tibiae., 0.77 to 0.80 inch $ Length, 

 1.25 inches; elytra, 1.13 inches. 



Utah (Haldcmaii, Thomas). 



Remark. — 1 have described CE. luddemannii fully, therefore give here 

 only the apparent differences, as is also the case with OS. parado.va, believing 

 all three to be but varieties of one species. 



<E. haldemanii, Sciidd., Hayden's Geol. Surv. Neb., 251. 



Female. — Large size ; thorax broad. . Vertex Ijroad ; central foveola sub- 

 quadrate, transverse, its inner portion more or less interrupted by small tidier- 



