114 
3. Proiiotuin as above; femora brown at tips or bases; segments 1 to t> yellow. 
Stigma three times as long as wide; costa not or scarcely paler than 
stigma 11. /ocularis Cresson. 
Stigma twice as long as wide; costa much paler than stigma. 
12. hoodi n. sp. 
4. Pronotnm yellow; thorax otherwise black; abdomen black, except lateral 
third of segments after the first and venter 13. koebelci n. sp. 
5. Pronotum yellow; thorax and abdomen reddish yellow, marked with black. 
11. bivittaia Norton. 
Mai €8. 
Femora altogether black, or at least hind pair. 
Pronotum and teguke black. 
Posterior tibiae pale, strongly infuscated at tips 5. siskiyouensisn.&p. 
Posterior tibia' strongly in t'nscal ed. nearly black I. lata Cresson. 
Pronotum black ; tegnlae pale; apical half of hind tibiae black . 8. hanksi n.sp. 
Femora black basally, paling apically; pronotum and clypeua black; labrum infus- 
cated !>. idiota Norton. 
Femora pale, except sometimes tips of posterior pair. 
Abdomen, with basal segments, yellow 11. /ocularis Cresson. 
Abdomen altogether black dorsally. 
Venter pale 15. oarolinensis n. sp. 
Venter black. 
Pronotnm and legs orange yellow 1G. luteola Norton. 
Pronotum and legs reddish yellow; genitalia strongly infuscated. 
17. occidentalis n. sp. 
Pronotum black, except extreme angles; legs and genitalia yellow. 
18. coloradensis n. sp. 
INDEX TO SPECIES <>l PRISTIPHORA. 
banksin. sp. S 9 s labradoris Norton 9 2 
bivittata Norton 9 11 lata Cresson <J 9 1 
carolinensis n. sp. J 15 luteola Norton,/ lb 
eoloradensis n. sp. $ 18 murtfeldtia- n. sp. 9 b 
dyarin.sp. 9 10 nigra n. sp. 9 1 
hoodi n. sp. 9 12 occidentals n. sp. $ 17 
idiota Norton $ 9 9 relativa Norton 2 7 
identidem Norton = idiota. siskiyouensis n. sp. £ 9 - r > 
jocularis Cresson & 9 H sycophanta Walsh 9 3 
koebelei n. sp. 9 13 tibialis Norton = sycophanta. 
1. Pristiphora nigra new species. 
Female. — Length 5.5 mm.; surface somewhat shining, head rather 
densely and finely granulate; clypeus scarcely em ar gin ate, almost 
truncate; elevations, frontal and ocellar, almost obsolete; antennal 
fovea broad, circular, shallow; intercostal cross vein about its own 
length anterior to basal and strongly inclined; first transverse cubital 
wanting, venation otherwise normal; stigma not greatly broadened at 
base; apex of costa considerably enlarged; scopaof sheath rather long 
and dense; cerci short tapering; inner tooth of claw short, obtuse. 
Color black; tibiae, except apices of posterior pair and bases of tarsi, 
lighter, inclined to whitish; wings strongly infuscated; veins, includ- 
ing stigma and costa, dark brown. 
One female. Easton, Wash. (Coll. U. S. Nat. Mus.) 
