19333 New Psammocharidse from the United States 15 
wholly black, and no band over the basal and transverse 
nervure of the forewing. Head, thorax, legs, and antennae 
yellowish, tips of hind tibiae, and tips of hind tarsal joints 
darker, forewings with a dark cloud behind the marginal 
cell and another over the tip of wing, veins brown, else- 
where and the hind wing hyaline. 
Clypeus broad, rounded below, clothed with yellowish 
hair; antennae a little longer than in P. facetus , third joint a 
trifle longer than the fourth; ocelli subequal, posteriors 
nearer to each other than to the eyes ; vertex nearly straight 
across, with two or three erect hairs each side ; occiput with 
scattered pale hairs, similar ones on prosternum and front 
coxae; pronotum rounded behind as in facetus; propodeum 
with some white pubescence each side behind near tip, also 
silvery pubescence on most of the pleura, and on middle and 
hind coxae. Front tibia with a few bristles beneath, mid 
tibia with two rows of a few bristles above, hind tibia with 
two rows or eight or nine small, but distinct, teeth above, 
each tipped with a bristle ; inner spur of hind tibia about 
two-thirds of the basitarsus. Marginal cell of fore wings 
pointed at tip, not its length from tip of wing, and extend- 
ing as far out as the tip of the third submarginal cell ; sec- 
ond submarginal a little longer than high, third much 
longer, but upper side only about two-thirds of lower side, 
first and second recurrent veins end at middle of second and 
third submarginal cells, second recurrent only faintly sinu- 
ate, basal and transverse slightly disjointed. 
Length 7.5 mm., fore wing 5.5 mm. 
From Tempe, Arizona, 2 Aug. ( J. Bequaert) . 
Type M.C.Z. 17044. 
Priocnemis navajo sp. nov. 
$ Black throughout, abdomen polished, thorax and head 
finely punctate ; wings dark, but darkest on tip, and in sec- 
ond and third submarginal cells and in the second discoidal, 
similar to P. conicus. Clypeus broad, truncate below ; ocelli 
subequal, posteriors a little nearer each other than to eyes ; 
vertex nearly straight across, with a few erect hairs, a few 
hairs on face; third joint of antennae not as long as first 
