27 
posterior pair, and tips of tarsi, including all of posterior pair, reddish 
brown; all of legs somewhat infuscated; veins brown; basal half of 
stigma and extreme base of costa pale; in some specimens the legs 
beyond the trochanters are altogether light, except posterior tibia3 and 
tarsi. 
Male. — Length 3.5 mm. ; agrees with the female in general structure and 
colorational characters; lateral walls of ocellar basin more flattened 
and rounded; the stigma uniformly brownish; the antennae distinctly 
fulvous beneath. 
Gall. — Length 8 mm.; breadth G mm. Of type of desmodioides, but 
rather smaller and projecting most on lower surface of leaf. In the 
specimen examined, two occur on the leaf, one on either side of the 
midrib, and each extends from the latter to the margin of the leaf. Sur- 
face, especially lower, tuberculate and rosy. Exit hole of adult on 
lower side, just at surface of leaf and at end next to petiole. 
Ten females. — Nevada 4, California 3, Oregon 2, and Arizona and 
Montana 1 each. (Coll. Am. Ent. Soc.) Also one specimen collected 
by T. Kincaid at Olympia, Wash. (Coll. Cornell TJniv.) One male 
from California. (Coll. Am. Ent. Soc.) Galls on willow leaf collected 
by Mr. Ehrhorn, Mountain View, Cal. Two adults reared^ which, with 
galls, are in collection of William H. Ashmead. 
3. Pontania nigrita new species. 
Female. — Length 4 mm. ; clypeus circularly excavated ; lobes rounded; 
mouth parts with rather long, whitish hairs; walls of ocellar basin dis- 
tinctly defined; frontal crest somewhat broken by the very elongate, 
distinctly limited antennal fovea; antenna} with joints 3 to 5 sub- 
equal; sheath broad, strongly acuminate at tip; cerci robust, tapering; 
claws deeply notched, rays nearly equal; third cubital cell quadrate, not 
longer than wide; outer veins of discal cells of hind wings interstitial. 
Color black, shining; face below antennae, posterior and upper orbits, 
most of pronotum, tegulae, all of legs except extreme bases of posterior 
coxae and extreme bases of posterior tibiae whitish or resinous; tips of 
posterior tarsi and tips of cerci dusky; bases of all wing veins reaching 
the body and extreme base of stigma light; balance of veins brown. 
One female. Michigan. (Coll. IJ. S. Nat. Mus.) 
4. Pontania pallicornis Norton. 
1861. Nematus pallicornis Norton. Boston Proc, vm, p. 160. 
1867. Nematus pallicornis Norton. Trans. Am. Ent. Soc. i, p. 203 (Cat., etc., p. 65). 
Female. — Length 5 mm.; somewhat robust; clypeus circular and mod- 
erately broadly notched, lobes small; mouth parts with scattering whit- 
ish hairs; vertex roughened; ocellar basin distinctly defined ; frontal 
crest strongly developed, very slightly broken by the antennal fovea, 
