Scudder.] 344 [February 24, 



the middle, and its hinder border well rounded. Tegmina testaceous, 

 the costal edge ferruginous, a narrow, black, humeral stripe of equal 

 width throughout, scarcely as long as the pronotum; apical half of 

 the tegmina faintly tinged with fuliginous, commencing at the end 

 of the anal field and widening posteriorly, but not including any of 

 the costal field ; wings hyaline; costal border testaceous. Legs black; 

 meso- and metanotum luteous, spotted with blacldsh fuscous. Abdo- 

 men blackish fuscous above, the sides naiTowly edged with testaceous; 

 the supraanal plate testaceous, fuscous at base; abdomen below 

 black, with some obscure dull luteous markings on the basal segments; 

 terminal segment narrowly bordered posteriorly with ferruginous; 

 anal cerci moderately long, tapering slightly, bluntly rounded at tip, 

 blackish. Length of body 1.92 in. ; of body including the tegmina 

 2.58 in.; of antenna 1.3 in.; of pronotum .52 in.; breadth of same 

 .75 in. It is nearly related to B. gigantea. One $ . Napo or Maranon. 

 Other Blattarife were obtained, but either young specimens, or too 

 mutilated to bear description. 



FORFICULARI^. 



38. Chelidura robusta nov. sp. 



Head piceous ; labrum slightly reddish ; mouth parts and first and 

 part of second joints of antennte reddish. Prothorax, tegmina, ab- 

 domen and forceps piceous ; pronotum docked squarely in front, the 

 lateral angles square, the hind border well rounded, convex, the lat- 

 eral borders slightly marginate ; a finely graven median line. Teg- 

 mina short, quadrate, smooth; upper surface and sides of abdominal 

 segments minutely, the penultimate segment also profusely punctured. 

 Legs brownish yellow. Forceps stout, trigonal, beneath flat, straight 

 nearly to the tip, the lower surface for this same distance furnished 

 interiorly with a minute blade ; the tips are bent toward each other, 

 but not strongly. Length of body including forceps, .9 in. ; of forceps, 

 .2 in.; of tegmina, .12 in.; width of pronotum, .12 in. Two $. Be- 

 tween Quito and Napo, and at Napo. 



39. Psalidophora nigripennis nov. sp. 



Piceous; pronotum and front of head, shining, the former bordered 

 laterally with dull luteous. Head broader than the pronotum, smooth; 

 the long, basal and minute, second joint of antennte black ; remaining 

 joints, like the palpi, fusco-rufous. Pronotum quadrate, the posterior 

 border broadly rounded ; a very slight median cai-ina. Tegmina and 

 exposed parts of wings black, densely and most minutely punctured, 

 and furnished with a very few fine, distant, long, erect hairs. Femora 



