52 PROCEEDINGS OF THE NATIONAL MUSEUM vol.68 



December 10 the thermometer registered —14° F. On December 18, 

 when thawing again, dozens of flies were actively crawling about in 

 the cage, having emerged either since November 26 or since De- 

 cember 10. More were found in cage February 19, 1918, and more 

 March 11 and March 23. Brodie found the gall common at Toronto 

 where adults issued November 4, 1885, and from November 12-21, 

 1886, over 300 were reared from another lot of galls. Some lived 

 till January 29 but none survived winter. He examined over 800 

 specimens without finding a male. He says they oviposit in the 

 roots. He received galls from 100 miles west of Winnipeg in Mani- 

 toba and says the producers could not be separated from Ontario 

 specimens. He also had galls from Port Sidney, Muskoka, from 

 which flies issued November 9. 



XANTHOTERAS CALIFORNICA (Beutenmueller) 



Philonix calif orniea Beutenmueixer, Ent. News, vol. 22, 1911, p. 69. 



The type material of this species was collected by Coquillett in 

 Kern County, Calif., November 1, 1892, the flies emerging January 

 21 and February 2, 1893, the gall apparently on a leaf of Q. dumosa. 

 The types have not the characteristic ventral spine of a Philonix 

 and seem to go best in Xanthoteras. The writer has collected the 

 galls on Q. dumosa at Bartlett Springs, Jolon, Paso Robles, and on 

 Cajon Pass. From galls collected on Liebre Summit on the Ridge 

 boulevard to Bakersfield on September 13 living flies were cut out 

 on November 10. At Boulevard in March both old and empty galls 

 were found and also new ones still thin as tissue paper and on the 

 last season's leaves, as the new leaves had not yet appeared. The 

 galls seem to be always on the upper side of the leaf. At Lebec a 

 gall was collected on Q. douglasii and a living fly cut out Novem- 

 ber 10. 



XANTHOTERAS TERES, new species 



Female. — Head and thorax reddish-brown, the occiput, middle 

 of face, antennae, mesopleura, and region of anterior lines infus- 

 cated, abdomen black. Head and thorax uniformly sparsely pu- 

 bescent. Head granulate; from above broader than thorax, cheeks 

 broadened behind eyes, occiput slightly concave ; from in front facial 

 quadrangle one and two-tenths times as broad as high, malar space .4 

 eye with groove, antennae 14-segmented, lengths as (scape) 12 : 6 : 16 : 

 13.5 : 11 : 10 : 9 : 8 : 7 : 6 : 6 : 5 : 5 : 7. Sides of pronotum and mesoscutum 

 smooth with setigerous punctures, parapsidal grooves deep, smooth, 

 percurrent, their separation behind only 3 times the width of a 

 groove, no median. Disk smooth above, rugose behind, sides bounded 



