43 
bases of posterior coxre brownish black; tips of posterior tibiae and 
tarsi, and cerci, infuscated; antennae unicolorous, brownish black. 
. One male. Cresson's type. Texas. (Coll. Am. Ent. Soc.) 
30. Pontania pyriformis new species. (Frontispiece, fig. 5.) 
Gall. —Galls occurring on leaves of Salix californica(f). Collected by 
Albert Koebele, Donner, Placer County, Cal., September 5, 1885. Galls 
occur on the underside of the leaf, attached to or near the midrib, 
usually singly, but sometimes two separately on the leaf, or more fre- 
quently partly coalescing, in which case one is usually abortive. They 
are pear shaped, attached rather broadly (J to J greatest diameter) at 
the larger end, and rather acutely pointed, sometimes slightly curved 
at tip, or more rarely bifurcate. They consist of a mere shell, con- 
taining with the larva very little frass, as though the larva had sub- 
sisted more on secretions than on the solid interior of the gall — the gall 
giving now no indication of ever having been fleshy and solid. The 
full-grown larva escapes through the base of the gall at its point of 
attachment, emerging, therefore, on the upper side of the leaf. The 
larva is white, with light-brown head and black eye-spots, 7 to 8 mm. 
long. Six specimens of Pimpla euurce Ashrn. 1 were reared, but no 
gall-flies. 
31. Pontania monile new species. (Frontispiece, fig. 6.) 
Gall. — Gall occurring on the leaves of willow. Collected at the mouth 
of the American Fork Caiion, Utah, by Mr. E. A. Schwarz, June 29, 
1891. 
Smooth, globular, fleshy galls, 6 to 8 mm. in diameter, occurring from 
2 to together in a row on the underside of the midrib of willow leaf. 
The area of attachment is about one-half the greatest diameter of the 
gall, and on the upper side of the leaf appears as a slight convexity. 
When closely placed, the galls lose somewhat of the spherical shape, 
but rarely grow together. The larva begins eating out the interior of 
the gall near the base, and is rather robust, 10 mm. in length, with 
light, resinous head and dark eye-spots; light, yellowish- white body. 
An exactly similar gall, except occurring 1 or 2 together, is repre- 
sented in the collection, bearing the label January 10, 1884, without 
locality. It was collected in a later stage of development, and the inte- 
rior is completely excavated. In most cases the larva had abandoned 
the gall, issuing near the base. The specimens probably came from 
the Northwest. 
A gall similar to the last was also received from Mr. Lawrence 
Bruner, Robinson's Eanch, ^Vyoming, collected September 15, 1881, 
with the statement that it occurred on the leaves of Populus angusti- 
folia. Examination of the leaves seems to indicate that they are wil- 
low rather than poplar, and the gall may be doubtfully referred to the 
type described above. 
1 Insect Life, in, p. 463. 
