1869.] 343 [Scudder. 



above with fuscous. Pronotal shield irregularly ovate, the lateral 

 angles equally distant from the front and hind border, the whole bor- 

 der slightly marginate, but the hind border obscurely ; the front border 

 well rounded, projected forward so as just to conceal the head, the 

 hinder half of the sides forming an obtuse rounded angle with the 

 hind border; the hind border slightly curved; pronotum ferruginous, 

 whole hind border and half way to the lateral angles broadly bordered 

 with black ; a very large and broad discal spot with ill defined bor- 

 ders, its front broadly and deeply concave, so as to make it widely 

 and rather sharply bilobed, with large, quadrangular, lateral expan- 

 sions, and a well rounded, convex hind border scarcely reaching the 

 marginal band; this spot encloses dull, indistinct, ferruginous markings 

 in the shape of a J.; the whole shield, and especially just in front 

 of and behind the discal spot, minutely and transversely wrinkled. 

 Tegmina fuliginous, paler toward the tip, with a dark fuscous, narrow, 

 humeral stripe, becoming gradually fainter and scarcely extending 

 over half of the tegmina; wings hyaline, costal border testaceous; 

 legs very stout, fuscous above, fusco-luteous beneath; mesothorax 

 and metathorax bordered above posteriorly with pale testaceous. 

 Abdomen above uniformly dark castaneous brown, beneath ferrugi- 

 nous, the sides and terminal segment blackish fuscous ; anal cerci 

 short, stout, tapering, fuscous; terminal segment small, subquadrate, 

 in my single specimen asymmetrical. Length of body 1 .46 in. ; of 

 body including tegmina 1.94 in.; of antennse 1.25 in.; of pronotal 

 shield .46 in. ; breadth of same .67 in. It is allied to B. marmorata 

 Brunn. One $ from Napo or Maranon. 



37. B. armigera nov. sp. 



Head black, with two circular ferruginous spots just within the 

 bases of the antennaj ; eyes separated by a space scarcely so lai-ge as 

 half the length of the first joint of the antennas ; antennae slender, 

 tapering; first fourteen joints piceous, shining; beyond dull fuscous, 

 slightly washed with luteous toward tip. Pronotal shield broadly and 

 irregularly ovate, the whole border slightly marginate, the hinder 

 border obscurely so ; the front border well rounded, the middle of 

 the front scarcely produced and barely concealing the head, the 

 lateral borders well rounded, the hind border very slightly produced 

 and obtusely angulated ; pronotum luteo-ferruginous, enclosing a 

 large, shield shaped, piceous, immaculate spot, widely distant from 

 the front and lateral borders, and separated from the hind border 

 only by the very margin itself; its front border is subrect, very 

 eligiitly and angularly excavated in the middle, the upper outer angles 

 rounded, the spot narrowing posteriorly, its sides a little hollowed in 



