108 
Of an almost uniform dusky-brown color, varying from ash-brown to 
very dark brown; elytra rather paler than the pronotum and more or 
less distinctly spotted with dark brown. Wings a bright sulphur- 
yellow with a broad dusky or black outer margin, and a very distinct 
dark ray running inward toward and nearly to the base near the front 
or costal margin, leaving a narrow yellow stripe along the costal mar¬ 
gin ; the dark border occupies about one-third of the wing, narrowing 
as it curves round toward the anal angle, which it does not reach. 
Posterior femora usually marked with alternating bands of black and 
white, three of each; posterior tibiae dusky, black or blue-black, with 
a pale ring near the knee, spines black. 
Var. xanthopterus. —This differs from the preceding, as follows: 
The foveola of the vertex is usually open in front, its margins con¬ 
tinuous with the margins of the frontal costa; the median carina of 
the pronotum is higher and more distinctly arched, the angle of the 
anterior more distinct, and of the posterior margin more acute. The 
yellow of the wings is deeper and more inclined to a saffron color; 
the dark sub-marginal ray is short, not extending more than one-third 
the distance to the base. It is usually larger than sulphureus , the 
length of the female to the tip of the wings in some cases being 
fully two inches. 
Var. carinatus .—Similar in every respect to xanthopterus , except that 
the wings are more of an orange or reddish-yellow, and the median 
carina of the pronotum slightly more elevated, and the arch not curv¬ 
ing down quite so rapidly at the posterior extremity. 
Length of body of this species varies from less than an inch to an 
inch and a half. 
Common throughout the State; xanthopterus being apparently the 
southern type, and carinatus the western. 
12. TOMONOTUS NIETANUS, Sauss. 
Closely allied to T. sulphureus. Upper part of the head regularly 
convex; central foveola of the vertex sub-elongate, with a slender 
median carina, and a transverse sulcus across the hinder portion, gen¬ 
erally truncate and closed in front; upper part of the frontal costa 
subtricarinate; rest flat, arcuate below as seen from the side. Antennae 
slightly flattened and somewhat enlarged toward the tip. Median 
carina of the pronotum distinct, somewhat prominent but less so than 
in sulphureus, nearly straight on top, cut near the middle by the 
transverse sulcus, but not notched; anterior margin of the pronotum 
obtusely rounded, apical angle about a right angle, lateral carinae sub- 
distinct; disk of the posterior lobe nearly flat. Elytra and wings pass 
the abdomen. 
