117 
the closely allied lata, from which it may be separated by the characters 
of the hind tibia 1 . 
Two males and one female. Siskiyou County, Oal. April. Mr. Albert 
Koebele, collector. (Coll. U. S. Nat. Mus.) 
This species is closely related in general appearance to sycophanta 
Walsh, but differs distinctly in shape and size of head relative to 
thorax. 
0. Pristiphora murtfeldtiae new species. 
Female. — Length 6 mm.; not very robust, shining; head and thorax 
very finely punctured; clypeus truncate; antennal fovea shallow, indis- 
tinct, merging into the smooth ocellar region; antennae moderately 
stout, joint 3 longest; intercostal vein more than its length anterior to 
basal; third cubital cell not more than twice as long as wide at base; 
inner tooth of claw obtuse, rather large. Color black; teguhe, tro- 
chanters, tips of anterior femora, all tibia 1 except tips of posterior pair, 
anterior pairs of tarsi and bases of posterior pair, fulvous. 
One female, reared by Miss Mary Murtfeldt, at Kirkwood, Mo., from 
a smooth, greenish sing with black head, found feeding on black 
willow. Adult issued April 10, 1887. (Coll. U. S. Nat. Mus.) 
7. Pristiphora relativa Norton. 
1867. Pristiphora relatives Norton. Trans. Am. Ent. Soc, i, p. 77. (Cat. etc., 
p. 47.) 
1882. Nematus relativus Kirby. List Hym. Brit. Mus., i, p. 1 tO. 
Female. — Length 0.18, br. wings 0.38 inch. Color shining black. Antenna 1 as in 
P. tibialis. Head coriaceous, without sensible depressions about the ocelli; edge of 
nasus incurved. Tegulae and legs whitish; coxae and a wide band on the femora 
black; tips of posterior tibiae and their tarsi, except basal joint, fuscous. Wings 
hyaline, stigma and costa luteous, the latter pale at base; second submarginal cell 
contracted at junction with third cell. 
Great Slave Lake, H. B. T. R. Kennicott, collector. 
This is not as stout as the preceding species (tibialis), but resembles it much. 
I have not examined the type of this species, and merely reproduce 
the original description. 
8. Pristiphora banksi new species. 
Female. — Length 5 mm.; rather robust; head nearly as wide as 
thorax; clypeus rounded in front, not at all emarginate; vertex without 
ridges around ocellar basin, deeply and coarsely punctured; antenna 1 
tapering, third joint longest; claws with minute inner tooth; venation 
normal, except that second recurrent is wanting. Color black, shining; 
apex of clypeus, labrum, teguhe, apices of coxa*, trochanters, and tibia' 
for the most part pallid; anterior tarsi slightly infuscated; apical half 
of posterior tibia? and the posterior tarsi black. 
Male. — Agrees for the most part in structural and colorational char- 
