110 



dd. Elytra with largo, browuisb, irregular spots : 



c. Inside of the posterior femora coral -red, uot crossed by black 



bands i ^>"^(^<^»'(^nnu. 



i coralliiyes. 

 ce. Inside of the i)osterior femora yellow, crossed by three black 



bands rugosa. 



cc. Thorax not very broad ; vertex of moderate width ; disk of the 

 pronotum uot tuberculate J median carina more or less promi- 

 nent : 



d. Elytra marked with groups of fuscous spots, forming about 



three irregular bands : 



e. General color ash-gray, mottled with dusky-brown and white. . . wqualis. 



ce. General color dark reddish-brown ... - collaris. 



dd. Elytra in no way banded : 



c. Elytra marbled with large whitish and black spots marmorata. 



ce. Elytra ash-yellow, with a broad stripe of fuscous dots and small 



spots along the middle wyommgiana. 



aa. Median carina of the prouotum eut by two transverse incisions : 



h. Elytra crossed by three distinct, well-defined, dark bands* trifasciata. 



hi). Elytra not thus distinctly three-banded : 



c. Antenna} very long, especially in the male eucerata. 



cc. Antennae of medium length : 



d. Wings with distinct dark or fuscous bands across them : 



e. Back of the head very convex, elevated plattei. 



ce. Back of the head of the usual form : 



/. Elytra having on the lower field two sub-quadrate black spots, 



separated by an oblong whitish space cincta. 



ff. Elytra otherwise marked : 



g. Elytra marked with dark spots, which run together at the base 



and form an irregular band across the middle verruculata. 



gg. Elytra sprinkled with minute brown dots chiefly along the mid- 

 dle and lower half maritima. 



dd. Wings without distinct dark or fuscous bands across them : 



e. Apical half of the wings dusky or clouded ; border not regularly 



undulated gracilis. 



ee. Apical half of the wings cloudy or semi-transparent ; border 



regularly undulated undulata. 



AA. Wings pellucid : 



a. Median carina of the pronotum equal, or nearly so, throughout ; 



not much interrupted : 

 h. Wings slightly clouded at the outer and along the costal border, costalis. 

 bb. Wings not clouded : 



c. Median carina of the pronotum solid, not severed atrox. 



cc. Median carina of the pronotum cut by a cross incision pellucida. 



aa. Median carina of the prouotum not equal throughout; much 



interrupted : 



b. Back of the head elevated ; clay-yellow, with fuscous spots and dots Moica. 

 bb. Back of the head as usual ; testaceous parviceps. 



* (E. hoffmaiuiii, Thos., is closely allietl to (E. Irifasciaia ; l)ut the only speeiuieu seen is too imperfect 

 to give the species a place iu the table with suffioiout certainly. 



