402 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



first transverse vein, veins enclosing the open radial area termin- 

 ating abruptly before reaching the margin of the wing ; abdomen 

 black and shining, the first segment equal in length to all the 

 rest and covered with white hairs on the side beneath the wing, 

 sheath of the ovipositor dark yellowish brown. 



The galls of this species are round, hard, and sessile on the 

 branches of Quercus prinoides. They measure from 12 to 16 

 mm. in diameter; their surface when immature is smooth and 

 often quite red on the side exposed to the sun. When fully ripe 

 or matured they have a shrunken and shriveled surface, and their 

 color varies from ashen to dull brown. The free larval cell is 

 surrounded by a yellowish brown cellular mass that is denser than 

 a sponge and fills the entire space between the cell and the outer 

 wall. 



*H. fasciata Bassett. 



Length 4.5 mm. ; head yellowish brown, face smooth, shaded 

 lighter than the cheeks and vertex ; antennae dusky brown through- 

 out, 14-jointed with the joints rather indistinctly separated, second 

 joint oval, the third a little longer than the first and second com- 

 bined, the remaining joints of a uniform red; thorax shining 

 and almost black, parapsidal grooves deep, scutel very coarsely 

 wrinkled and corrugated, its foveas not distinct; legs brownish 

 red ; wings subhyaline, with the veins rather distinct, with an 

 areolet, an open radial area, and the cubitus reaching to the first 

 transverse vein ; abdomen greater in extent from its dorsal to 

 its ventral surface than usual. 



The galls of this species were found in September on the 

 summer growths of Quercus ilicifolia. They are arranged in 

 linear clusters near the tips of the shoots, somewhat after the 

 manner of the following species. While growing they are mot- 

 tled light and dark green, these spots often being arranged in 

 broad bands or fasciae. At the time of maturity they range from 

 6 to 12 mm. in diameter. At this time they are almost exactly 

 round. Finally they drop to the ground in response to the slight- 

 est touch and change then in color to a dull black. 

 *H. duricoria Bassett. Pointed Bullet Gall. 



Female: length 5 mm.; almost entirely black; antennae 13- 

 jointed, first and second joints together hardly longer than half 



