112 E. T. CRESSON. 



without elevated lines; wings hyaline, iridescent, nervures and stigma brown 

 areolet wanting; apical half of posterior tibiae and their tarsi entirely, blaeii : 

 abdomen elongate, first segment longer than broad, excavate at base, with late- 

 ral tubercles prominent; second and following segments with polished apical 

 margins. Length 3i lines. 

 Hab.— Ohio. (P. R. Uhler.) 



B. scutellaris. — % 9 • Black : anterior orbits and spot on face in "t, , clypr-us, 

 mandibles, palpi, spot on each side of mesothorax, larger in J, tegulaa, two 

 spots beneath, spot beneath base of posterior wing, scutellums, short inedian 

 line on apical margin of first segment, very narrow, sometimes indistinct api- 

 cal margins of remaining segments, and a dot on each side of the second seg- 

 ment at tip, white ; clypeus subemarginate at tip ; antennae longer than head 

 and thorax rufo-testaceous, dusky above, scape blackish ; most of pleura, flanks 

 of metathorax and legs honey-yellow; tips of posterior femora, their tibife, ex- 

 cept broad white annulus, and their tarsi, black; posterior middle of metatho- 

 rax obliquely rugose; wings hyaline, iridescent, nervures and stigma blackish, 

 areolet wanting; abdomen subpubescent, depressed, the first, and the second 

 and third segments, except apical margin, rugulose, opaque, remainder smooth, 

 shinin"; first segment rather longer than broad, with two central longitudinal 

 carinas, and a prominent tubercle on each side near the base. Length 2i — 3 

 linos. 



//a?,.— Illinois. (B. D. Walsh.) 



B. sycophanta (Walsh MS.) — % 9- Black; anterior orbits in 9 , face entirely 

 ']n%, clypeus. mandibles, palpi, spot on each side of mesothorax, tegulse, two 

 spots beneath, spot beneath posterior wing, scutellums more or less, and four 

 anterior eoxre and trochanters, white or yellowish-white; posterior tibiiie, ex- 

 cept broad white annulus, and their tarsi, black; sometimes the posterior tibise 

 are tricolored — black, white and reddish, sometimes reddish and white ; clypeus 

 sub-bilobed in front; metathorax abruptly truncated behind, with the disk and 

 posterior portion coarsely reticulated; wings hyaline, iridescent, nervures and 

 stigma blackish, the later pale at base, areolet wanting; legs and abdomen red- 

 dish, often the basal segment more or less, and the three or four apical seg- 

 ments, black; the first four segments with a deep, transverse line behind the 

 middle; first segment equilateral, raised on the disk and bicarinate, basal halt 

 of second, third and fourth segments rugulose, remainder smooth and shining; 

 some specimens have the abdomen black, with a broad reddish, median band 

 Length 2 — 3 lines. 



j:/a6.— Conn., N. Y., Penn., Del., Ills. Thiity ( ^ 9) specimens. 



Cteniscus annulipes. — %. Black, shining; anterior orbits, face, clypeus, 

 lower part of cheeks, and the mandibles except base and apex, whitish; anten- 

 nae black, pale beneath; lateral anterior margin of prothorax, two spots before 

 anterior coxae, a spot on pleura anteriorly, tegulsB, dot beneath, tips of scutellum 

 and jiostscutellum, and two narrow lines on'eaeh side to the base of the wing, 

 yellowish-white; pleura bsneatli fulvous; tip of scutellum truncate and exca- 

 vated above ; metathorax very uneven, abrupt behind, transversely striated, 

 the eleveted lines sharply defined, and that on each side of the central area 

 very prominent; wings hyaline, iridescent, nervures and stigma black, the lat- 

 ter with a pale spot at base, areolet small, oblique, subpetiolated ; legs rather 

 slender, pale fulvous, anterior coxae whitish in front; posterior tibiae and tarsi 

 anuulated with black and white; claws pectinated; abdomen sessile, subcla- 



