141 



1i[). Ultimate joint of the maxillary palpi enlarged at the tip, truncate. Pro- 

 sternuin unarmed ; anterior half tumid. Anal appendages of the female short 

 and obtuse; sub-anal plate of the male keeled, trigonal, and tunied up. 



B. nubiluiu, Thos., Hay den's Geol. Surv. Ter., 1870, 272. 



Syn., Oryllus nuMlus, Say, Ent. N. Am. Ed'n Lee, II, 237. 



Boopedon nigrum, Thos., Proc. Acad. Nat. Sci. Phila., 1870, 83. 



Medium size ; female much larger than the male. 



Female. — Occiput smooth, a few punctures on the vertex, a laint median 

 line visible: eyes about midway between the front and back margins of the 

 head ; frontal costa convex, with a very slight indeutation at the ocellus, 

 ])unctured on the margins, reaching nearly to the clypeus, suddenly expand- 

 ing below ; lateral carinse distinct, obtuse, sinuate, and divergent ; a deep 

 sulcus below each eye. Pronotum nearly as broad as the head ; median 

 carina distinct; posterior lobe punctate ; central portions of the sides levi- 

 gate ; cross incisions one and two not reaching the median carina. Elytra 

 nari'ow, about two-thirds the length of the abdomen, lanceolate ; the two 

 longitudinal veins strong, approaching each other, at the apex, along the 

 external margin ; the nervules coarse. Wings shorter than the elytra. 



Color (dried after immersion). — Dark, shining, almost uniform ferrugi- 

 nous; lower angles of the face and sides of the labrum black; tips of the 

 elytra black ; apex of the wings dusky, rest transparent ; two reddish spots 

 inside the posterior femora; tibiae a transparent-red. When living the color 

 is the same, except that the disk of the wings is a greenish-blue'; in one 

 variety there is a white ring around the posterior femora near the apex. 



Male. — Similar only darker. Elytra black, somewhat paler at the base; 

 wings transparent, tinged with blue, clouded at the apex. 



Dimensions. — 9 Length, 1.5 inches; pronotum, 0.35 inch ; elytra, 0.55 

 inch; hind femora, 0.95 inch; hiiui tibiae, 0.80. $ Length, 0.87 inch; pro- 

 notum, 0.25 inch; elytra, 0.55 inch ; hind femora, 0.62 inch ; hind tibiae, 0.56 

 inch. 



Near the Rocky Mountains (Say); Southeastern Colorado, Northern 

 New Mexico, and Western Kansas (Thomas). 



B. flavo-fesciatuiM, Thos., Proc. Acad. Nat. Sci. Phila., 1870, 84. — Hay- 

 den's Geol. Surv. Ter., 1870, 27.3. 



Female. — Carving and figure much the same as the female of B. nuUlum, 



