1669.] 339 [Scudder. 



■ 19. Aeridium oeeidentale nov. sp. 

 Dark brown; the head smooth, with very minute, distant pimctu- 

 lations; frontal and lateral carinae very prominent ; tip of labrum and 

 edges of mandibles whitish. Prothorax profusely punctate, the 

 median carina very slight ; prosternal spine rather stout, long, scarcely 

 tapering, excepting at tip, straight but inclining slightly backwards. 

 Tegmina obscure brownish, outer half semiopaque with fuscous spots; 

 ■wings hyaline. Hind femora externally flat and white, the carinas 

 distinct, the hind tibiae with black tipped spines. Length of body 2 

 in.; of pronotum .39 in.; of antennas .68 in.; of tegmina 1.23 in. ; 

 of hind tibias .96 in. Two ? . Napo or Maraiion. 



20. Aeridium labratum nov. sp. 



Head, especially the frontal ridge, punctate, brownish, the edge of 

 the labrum and' terminal joints of the palpi pale ; the carinas promi- 

 nent; antennte pale fuscous, darker toward the tip; eyes large, 

 oblong, prominent, separated above by a narrow space. Pronotum 

 brownish, closely punctate, the median carina barely perceptible. 

 Tegmina brownish, blotched indistinctly and abundantly with small 

 fuscous spots ; wings hyaline, with blackish veins, tinged with faint 

 yellowish at the base, and blackish fuscous at the apical half of the 

 costal margin. Legs brownish, tarsi edged with blackish ; hind 

 femora internally and externally flat and dark brownish fuscous, the 

 external inferior carina yellowish ; hind tibiae armed with black 

 tipped spines. Length of body 1.23 in.; of tegmina 1.17 in. ; of 

 hind femora .66 in. One ?. Napo or Maraiion. 



21. Chrysoehraon ? abbreviatum nov. sp. 



Brownish yellow ; head smooth ; lateral carinas of front distinct, 

 prominent ; median carina distinct, growing broader toward the 

 clypeus. Pronotum docked squarely in front, broadly rounded be- 

 hind, anteriorly smooth, jDosteriorly punctulate ; median carina dis- 

 tinct, slight; lateral carinas not i^rominent, marked by a black hue, 

 ■which extends forwards to the eye. Tegmina brownish, immaculate, 

 longer than the abdomen ; wings pellucid, faintly nebulose, esjjecially, 

 but still very slightly, at the tip ; costal margin blackish ; hind tibias 

 obscure fuscous, with pale, black tipped spines ; ovipositor reddish. 

 Length of body .6 in. ; of tegmina .5 in. ; of hind femora .42. One 

 ? . Between Quito and Napo. 



22. CEdipoda bivenosa nov. sp. 



Head rather smooth, dull luteous, marked with black points and 

 minute reddish brown blotches, arranged in irregular lines ; antennas 

 reddish, growing fuscous toward the tip. Prothorax finely scabrous, 



