40 
obsolete; antennal fovea shallow, uniting more or less with the slight 
depression about anterior ocellus; antennae very slender, rather elon- 
gate for the genus, joints 3 to 5 subequal; sheath long, narrow, regu- 
larly tapering 'to rather acute tip; venation normal; claws deeply cleft, 
rays subequal. Color black, shining ; mouth parts, angles of pro- 
notum, tegulse, and legs, including tips of coxa', whitish; upper and 
lower margins of femora are narrowly dark brown and the tips of the 
tibioe and tarsi, particularly posterior pair, brownish; the posterior 
orbits are reddish yellow; wings hyaline; veins light brown, costa and 
stigma hyaline. 
One female. Mount Hood, Oreg. (Coll. Am. Ent. Soc.) 
25. Pontania desmodioides Walsh. 
L866. Nematua .sal ids desmodioides Walsh. Proc. Ent. Soc Phila., VI, p. 257. 
18G6. Nematus inquilinus Walsh. Proc. Ent. Soc. Phila., vi, p. 2(50. 
18G7. Nematus salicis desmodioides Norton. Trans. Am. Ent. .Soc, i, p. I'll. (Cat., 
etc., p. < 
1867. Nematus inquilinus Norton. Trans. Am. Ent. Soc, I, p. 213. (Cat., etc., 
p. 75.) 
Nematus inquilinus Provancher. Can. Nat., x, p. 57. 
1883. Nematus inquilinus Provancher. Faun. Ent. Can. Jlvm., p. 190. 
1895. Pontania inquilina Marlatt. Proc. Ent. Soc Wash., Ill, p. 266. 
Female. — Length 5mm.j rather robust; head and thorax strongly 
punctured, s >mewha1 opaque; clypeus deeply and narrowly emargi- 
nate, lobes rounded; ocellar basin well defined, side walls thick; frontal 
crest Large, slightly notched; antennal fovea elongate, deeply exca- 
vated: (daws rather deeply and evenly cleft; sheath narrow, long, reg- 
ularly tapering, scarcely excavated beneath; cerci slender, tapering; 
wings with normal venation, except that the third cubital cell is nearly 
quadrangular. Color of antenna-, large spot including ocelli, stripe on 
anterior lobe of mesonotum, band in front of scutellum, most of meta- 
notum, and abdomen dorsally except sides and apex dark brown, 
approaching black (mesonotum sometimes nearly altogether black, 
except Bcutel) ; occiput, balance of mesonotum, and the mesepimera 
reddish brown, inclined to resinous: face, orbits, pronotum, scutellum, 
abdomen beneath, and legs yellowish ferruginous; veins and stigma 
yellowish brown, the former scarcely lighter basally. 
Male. — Length 4 mm.; structurally about as in female; vertex with 
numerous yellowish hairs; the ocellar basin less distinctly defined and 
the antennal fovea more triangular and deepening anteriorly; venation 
as in female, except that the intercostal vein is posterior to basal. 
Color brownish black; spot beneath antenna', clypeus, mouth parts, 
low T er and inner orbits, pronotum, tegulse, legs for the most part, broad 
stripe on venter of abdomen and dorsal apex of same, yellowish; 
posterior tarsi infuscated; posterior orbits reddish yellow, fuscous; 
veins yellowish brown ; stigma unicolorous. 
Gall. — The gall is found on S. humilis. It is smooth, flattish, fleshy, sessile, yellow- 
ish green, monothalainous, semicircular in general shape like the seed of aDesmodiuni 
