412 GEOLOGICAL SURVEY OF THE TERRITORIES. 



callosities oval, placed obliquely. Suture between corium and cuneus 

 externally deeplj' notched ; areole of the membrane obliquely narrowed 

 toward the outer end. 



L. media, Say, (Heteropt., Xew Harmony, p. 22, ^o. 11 :) C(q)sus Robi- 

 mcB, Uliler, (Proc. Eut. Soc, vol. I, p. 24.) — This species seems to inhabit 

 alDiost the whole territory of the United States. The present specimens 

 came from Cheyenne, and were collected in August, 1S70. The yellow 

 variety, named C. Rohinice^ dwells \\])on Rohinia pseiiclacacia. 



Sadronema. Uhler. 



Aspect of Lopus : cranium somewhat convex, face aluiost vertical ; 

 eyes promiuent, oval, almost vertical ; occiput with a high, transverse 

 carina between the eyes; tylus a little prominent, narrowing toward 

 the tip ; cheeks short and blunt ; buccul?e narrow, shorter than the 

 basal joint of the rostrum ; that joint subcylindrical, robust, a little 

 longer than the head. Antennae short, about as long as the corium 

 and cuneus united, stout; the third and fourth joints of nearly equal 

 thickness, not tapering to a setaceous termination ; the latter less than 

 one-half the length of the preceding. Pronotum trapezoidal ; the angles 

 rounded; the coUum forming an obtuse, narrow collar, and behind 

 it is an arcuated carina abbreviated a little way from the lateral mar- 

 gins ; the lateral edges prominently carinated. Costal margins of the 

 hemelytra almost straight, parallel. 



S. militaris. Xew species. — Black, dull, more or less tinged with cine- 

 reous. Head broad, dull black, having a few stiff hairs on the vertex, and 

 with yellowish pubescence about the tip of the tylus; buccula? yellow; 

 rostrum and antennae black, the former reaching to the intermediate 

 coxae; antennae sparingly setulose; the joints closely united; the basal 

 joint short, reaching a little way beyond the head; second longest, not 

 quite as stout as the basal, and more than twice as long; third joint a 

 very little more slender than the second and about one-fourth shorter ; 

 the apical one a little more slender, but not setaceous, a little longer than 

 the basal ; these two last densely covered with golden-yellow pubescence. 

 Pronotum rather flat, yellowish-red, the anterior lobe black, and some- 

 times that color extends backward on the middle, invested with black, 

 remote, bristly hairs; the posterior lobe coarsely, transversely rugose, 

 the carinated lateral edge a little sinuated: the anterior angles rounded 

 and posterior ones more broadly so, and having the edge a little raised ; 

 propleura red x:)osteriorly, smooth; the remainder of the pectus, and 

 the legs, bluish-black, the latter with yellowish pubescence ; posterior 

 femora with a row of obsolete blacker points. Scutellum a little scooped 

 out upon the middle. Corium black, the costal margin broadl3' yellowish- 

 white, invested with remote erect setae ; the cuneus yellow, except on 

 the inner part of base ; membrane pale fuscous, with the nervule black. 

 Abdomen dull bluish-black, invested with yellowish, minute pubescence; 

 the upper margins broadly red on the middle, more narrowlj' so at tip. 



Length to tip of venter, 3J~5 millimeters. Width across the humeri, 

 IJ-IJ millimeters. 



Inhabits Colorado ; Ogden, Utah ; California ; also found at Cheyenne, 

 in June, 1869. 



The specimens vary in the width of the pale margin of the hemelytra 

 and in the extent of black on the i^ronotum. The base of the corium is 

 sometimes entirelv whitish. 



