31 
with rather long, curved hairs; cerci long, slightly tapering; upper 
discal cell of hind wings usually much shorter than lower and termi- 
nating within apex of latter. Color resinous yellow; quadrate spot on 
vertex, broad stripe on dorsum of thorax extending to scutellum, 
metanotum and more or less of basal segments of abdomen centrally 
decreasing posteriorly, and upper margin of sheath brownish-black; 
scape and upper half of antenna, tips of mandibles, and balance of 
sheath fuscous; veins brown, costa and stigma centrally yellow. 
Male. — Length 4 mm. ; rather slender, tapering distinctly from head 
and thorax to tip of abdomen; structurally, as in the female, with the 
lateral walls of the ocellar basin perhaps even less apparent — practi- 
cally obsolete. Color black, shining, including orbits; mouth parts, 
angles of pronotum, teguhe, and legs brownish yellow; tips of posterior 
tibiae and tarsi somewhat infuscated; antenna beneath fulvous; veins, 
including all of stigma and costa, rather dark brown; wings hyaline. 
Gall. — (Frontispiece, fig. 1.) On leaves of Salix califomica collected by 
Albert Koebele at Donner, Placer County, Cal., September 5, 1885. The 
galls occur in clusters of two to eight on the basal portion of the leaf, 
beginning usually at the very apex of the petiole. They are commonly 
paired — if but two, one on either side, or two or four on a side, as the case 
may be — occasionally occurring singly. In general size and appearance 
the individual galls resemble those of desmodioides, but are rather more 
robust or globular, projecting equally on both sides of the leaf and 
occupying the leaf entirely from the midrib to the edge. Where two 
or more occur together, they are merged into each other, forming a com- 
pound gall. In color they are red or pink on the upper side and light 
yellowish green on the lower. The larva is large and rather robust, 
indicating a fairly good-sized insect. I have doubtfully referred the 
gall to Pontania resinicola, the largest Californian representative of the 
genus, although the galls from which the adults were reared by Mr. 
Koebele were not saved by him and the ones sent to Washington 
yielded only an ichneuinonid parasite (Bassus euurce Ashm., Ins. Life, 
vol. in, p. 4G0) and a tortricid. 
Two females and seven males. Albert Koebele, Los Angeles, Cal. 
(Coll. IT. S. Nat. Mus.) 
10. Pontania pectoralis new species. 
Female. — Length 5 mm.; rather robust; clypeus very broadly and 
shallowly emarginate; frontal crest and sides of ocellar basin sharply 
and distinctly defined, former unbroken; antennal fovea broad oval; 
fourth joint of antemne a little longer than third; claws deeply 
notched, rays nearly equal; sheath of ovipositor stout and broad 
basally, slightly emarginate on lower apical edge, tip obtusely rounded; 
cerci short, tapering; third cubital three times as long as wide at 
base; outer veins of discal cells of posterior wings nearly interstitial; 
stigma very broad basally, regularly tapering to pointed apex. Color 
