108 PROCEEDINGS OF THE NATIONAL MUSEUM vol. CS 



BASSETTIA CEROPTEROIDES (Bassett) 



A gall agreeing with the Bassett type galls of this species was 

 collected at Miller, Indiana, on Quercus coccinea on May 19, but the 

 adults had escaped. 



BASSETTIA GEMMAE Ashmcad 



The species was described from flies taken ovipositing in buds 

 April 27, at Cadet, Mo. Gall unknown. The writer captured flies 

 agreeing with the types ovipositing in the buds of Q. alha at 

 Clinton, 111., April 21, 1916, Evanston, 111., April 9, 1910, Washing- 

 ton D. C. March 27, 1920, April 24, 1921, April 15, 1924. 



BASSETTIA TENUANA Weld 



Galls collected on Q. undulata at foot of bluff 17 miles east of Hills- 

 boro, N, Mex., on November 14, 1921, contained adults and living flies 

 were cut out of the galls on January 13 and February G, 1922. Galls 

 were collected on Q. fendleri at Las Vegas, October 17, 1921, some 

 containing adults and others larvae. At Shoemaker on October 23, 

 1922, on Q. gamhelii some contained living adults and others were 

 partly grown with a thick translucent nutritive layer in the cells. 



EUMAYRIA HERBERTI, new species 



FeTnale. — Ked, eyes and ventral valves black. Head and thorax 

 opaque, the sculpture apparently coriaceous but the polygonal areas 

 are bounded by ridges. Head from above broader than thorax, mas- 

 sive, occiput slightly concave; from in front face pubescent, malar 

 space .46 eye without groove, antenna 13-segmented, lengths as 

 (scape) 15 (width 6) : 7(5.5) : 11(4) : 10: 9 :9: 9: 8: 8: 8: 8 : 7: 15(5), 

 flagellum gradually becoming stouter toward apex. Parapsidal 

 grooves smooth, deep, percurrent, wider behind with a trace of a 

 median. IVIesocutum broader than long. Scutellum with two large 

 diep f-mooth pits, the sculpture on disk becoming coarser behind. 

 Carinae on propodeum straight and parallel. Hind tarsus shorter 

 than tibia, segments as 28 : 7 : 5:3: 9, claws simple. "Wing hyaline, 

 covered with very short brown pubescence, margin not ciliate, veins 

 very pale, first abscissa of radius arcuate, no areolet. Abdomen as 

 long as head and thorax, lengths of tergites along dorsal curvature 

 as 52 : 7 : 4 : 4 : 3 : 6, second with interrupted ring of wool as base, 

 hind margin not oblique, ventral valves oblique and protruding, 

 ventral spine slender and in side view 8 times as long as broad. 

 Using width of head as a base the length of mesonotum ratio is 1.2, 

 antenna 2.3, ovipositor 3.3, wing 3.8. Length, 1.9-2.4 mm. Average 

 of 75, 2.17 mm. 



