70 ENTOMOLOGICAL NEWS [Tels Aa 
ent, but not prominent, almost parallel. Anterior parallel lines scarcely 
evident. Median line running from the scutellum to about the middle 
of the thorax, not distinct. Pleurae with a large, smooth shining area. 
Scutellum rufous, rugose, foveae at base oblique and opaque. Abdomen 
reddish brown, posterior half piceous, smooth and shining. Legs red- 
dish brown, long and slender, pubescent. Wings (immature) hyaline, 
veins brown. Length, 4 mm. 
Gall.—In clusters around the twig of black oak (Quercus velutina). 
Monothalamous. Rounded with the apex pointed, and the sides longi- 
tudinally grooved. The rounded part is hollow and rather thin walled, 
and the base of the gall is imbedded in a cavity in the twig. Rose 
colored, hard and woody (when dry). In general appearance the gall 
resembles a very small seed onion. Length 5-8 mm. Width 4-5 mm. 
Habitat—Indiana. (Mel. T. Cook). 
Andricus pisiformis sp. nov. 
Female.—Head dark reddish brown, finely granulated and with short 
pale hairs. Antennae 13-jointed, reddish brown, terminal joints black- 
ish. Thorax dark pitchy brown, reddish brown along the parapsidal 
grooves and laterally, minutely reticulated and with many pits, from 
each of which arises a short, decumbent, yellowish hair. Parapsidal 
grooves deep and well defined. Median groove distinct, and less so 
anteriorly. Lateral grooves deep. Anterior parallel lines not extend- 
ing to the middle of the thorax. Scutellum reddish brown, rugose and 
with two large, deep, shining black foveae at the base. These are sep- 
arated by a fine ridge. Pleurae pubescent, with a rather large shining 
area, pitchy brown. Abdomen  subglobose, inflated, pitchy brown, 
smooth and shining. Legs brown, punctate and pubescent. Wings 
hyaline, veins brown, cross-veins heavy. Areolet small. Cubitus not 
reaching the first cross-vein. Length 2-3.50 mm. 
Gall.—On the terminal twigs of white oak (Quercus alba) and post 
oak (Quercus minor) from the middle of May to early in June. Mono- 
thalamous. Spherical or pea-like. Milky white or pale greenish white, 
speckled and marbled with green or lilac. Fleshy when fresh, hard 
and woody when old and dry. It is hollow inside with no separate 
larval chamber. It is evidently a bud gall. Diameter 3-6 mm. 
Habitat—New Jersey (Lakehurst); Massachusetts (Bos- 
ton). 
The flies mature in the gall during the latter part of Sep- 
tember and in October, but do not emerge until the following 
spring. The gall is a pretty object and looks like a very small 
marble. The specimens on white oak from Boston were col- 
lected by Miss Cora H. Clarke at the Arnold Arboretum. 
