NATURAL SCIENCES OF PHILADELPHIA. 83 



lowest above ; lateral carinae distinct, strongly divergent below ; eyes medium 

 size, ovate. Pronotum short, sub-truncate in front, posterior angle obtuse 

 and rounded ; the three transverse incisions distinct and closely approximate 

 anterior shortest, 2 and 3 connect at their termini on the side of the pro- 

 notum by an oblique depression ; incision 3 about the middle ; median carina 

 distinct, not, elevated; lateral earime distinct on the anterior lobe and front 

 part of the posterior lobe ; the spaces on the anterior lobe between the median 

 and lateral carinae depressed, basin-like. Elytra and wings about as long as 

 the abdomen. Posterior femora inflated at the base, attenuate near the tip. 

 Pectus not broader than the head. Antenna; filiform, reaching the end of the 

 pronotum. 



Color (siccus). Yellow varied with brown. Head yellow, occiput dotted 

 with brown, forming imperfect waved lines; antenna; pale at base, remainder 

 brown. Pronotum with a yellow cross on the back, beginning at the lateral 

 angles of the posterior lobe, converging anteriorly they cross about the middle 

 and fade on the anterior lobe ; a triangular brown spot on the posterior lobe : 

 sides brownish fading below. Elytra brown, a yellow stripe along the inner 

 margin ; lower half dotted with dark brown. Wings transparent, the veins 

 white except at the apex where they are dusky. Posterior femora yellow with 

 two or three oblique brownish spots near the upper edge, which cross and 

 become distinct; bands on the inside ; knee brown ; tibiae dusky above, and at 

 the tips, rest yellow (probably bluish in fresh specimens.) 



Dimensions. Female. Length 1-07 in. ; to tip of elytra 1-10 in. ; to end of 

 pronotum -34 in. ; femur -62 in. Male. Length -88 in. ; to tip of elytra same ; 

 femur -60 in. 



Hah. Eastern Colorado. 



Named in honor of Mr. Henry Elliot, artist of the expedition, who, in addi- 

 tion to his arduous duties, was constant in his efforts to collect specimens of 

 Nat. Hist., and who rendered me valuable assistance in collecting plants and 

 insects. 



BOOPEDON, Thos., nov. gen. 



Gen. Char. Body somewhat like Pezolettix, Burm. Head large, exceeding 

 the thorax in width, widest below : seen from the side presents a somewhat 

 semi-circular front ; occiput convex ; vertex sloping, broad, sometimes ex- 

 hibiting a shallow foveola, usually rhomboidal, with a slight median carina : 

 frontal ridge prominent, not silicate, margins obtuse and nearly parallel. 

 Antenna; nearly as long as head and thorax, inserted in deep oblong foveola . 

 Pronotum of medium length, sides parallel ; sub-truncate in front ; posterior 

 angle obtuse; three transverse incisions; posterior about the middle, cutting 

 the median carina ; median carina distinct, not elevated ; lateral carina? ob- 

 solete. Elytra shorter than the abdomen in the female, about the length of 

 the abdomen in the male ; inflated ne*r the base, narrowed at the apex ; two 

 longitudinal veins dividing it into three nearly equal fields. Posterior femora 

 stout, narrowed at the tip, passing the abdomen ; tibia; spincd, enlarged at the 

 tip Ultimate joint of the maxillary palpi enlarged at the end, truncate. 

 Prosternumwith the anterior half tumid ; latter half divided by a longitudinal 

 sulcus. Pectus sub-convex or flat. Anal appendages of the female short 

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



B. nigrum, nov. sp. 



Black, medium size, female much larger than the male. 



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

 line visible ; eyes about midway between the front and back margins ; frontal 

 ridge convex, with a very slight indentation at the ocellus, punctured on the 

 margin, reaching nearly to the cross suture, where it suddenly expands ; lateral 

 carina: distinct, obtuse, sinuate and divergent; a deep sulcus below each eye. 

 Pronotum nearly as broad as the head; median carina distinct, straight ; pos- 



1870.] 



