1§97.] NATURAL SCIENCES OF PHILADELPHIA. 231 



Notocyphus dubius n. sp. 



9 • — Black ; spot on each side of dorsal abdominal segments 1-5 

 varying in size and sometimes uniting on 2 and 3, sixth seg- 

 ment entirely, pale reddish ; inner and posterior orbits narrowly and 

 obscurely, clypeus at base and laterally and hind margin of prono- 

 tum yellowish ; head and thorax with a silvery sericeous pile, more 

 observable in certain lights ; front strongly furrowed, convex on 

 each side ; eyes not reaching base of mandibles, space between them 

 at top about equal to length of first joint of flagellum ; hind ocelli 

 separated by a somewhat greater distance than from the inner eye 

 margin ; clypeus broadly truncate, more than three times broader 

 than long ; labrum truncate, not as long as the clypeus is wide ; 

 antenna? longer than head and thorax united ; pronotum strongly 

 arcuate posteriorly; middle segment long, emarginate posteriorly, 

 the postero-lateral angles produced, upper surface with a longitu- 

 dinal, central impressed ljne, from each stigma a deep furrow runs 

 to hind coxae ; legs feebly spinose, the longer spur of hind tibiae a 

 little more than half as long as the first hind tarsal joint; wings 

 yellowish, apical margins fuscous, cubital vein of hind wings intersti- 

 tial with apex of submedian cell ; abdomen about as long as the 

 thorax, compressed apically, with a faint bluish pile. Length 21- 

 22 mm. 



Santarem (February). Two specimens. Seems to be near maculi- 

 frons Smith and macrostoma Kohl. From the former it differs in 

 coloration of wings, antennae and abdomen. It is, perhaps, closer to 

 macrostoma, but is larger, and, judging from Kohl's figure, the 

 middle segment is differently shaped. 



Notocyphus similis n. sp. 



9 . — Black ; wings yellow, apical margins slightly fuscous ; 

 clypeus short, broadly truncate, more than three times broader than 

 long ; labrum nearly as broad as long, shorter than width of clypeus, 

 broadly emarginate at apex ; front with impressed line ; eyes but 

 little separated from mandibles, space between them at top about 

 equal to length of first joint of flagellum ; hind ocelli separated by 

 a greater distance than they are from nearest eye-margin ; antennae 

 longer than head and thorax ; pronotum arcuate posteriorly ; middle 

 segment roundly emarginate posteriorly, but not strongly, the pos- 

 tero-lateral angles scarcely prominent, when viewed from within ; 

 posterior face with a fine transverse striation, the stigmal furrow 

 shallow above ; tibiae not at all spinose, the longer spur of hind pair 



