ART. 10 GALL-INHABITING CYNIPID WASPS WELD 53 



by diverging straight lines, transverse groove at base not distinctly 

 divided into pits. Carinae on propodeum arcuate, enclosed area 

 broader than high. Tarsal claws with a tooth. Wing reaching 

 back to about the middle of second tergite, blunt, pubescent, vena- 

 tion normal as far out as costal hinge, a balsam mount of a favorable 

 specimen shows the free part of subcosta, the first abscissa of radius 

 and areolet obsolete, the second turning sharply upward toward wing 

 margin, the cubitus represented by a linear cloud. Abdomen as 

 long or longer than head and thorax, length to height to width as 

 26 : 21 : 17, lengths of tergites along dorsal curvature as 83 : 15 : 5 : 

 0:0:8, pubescent patches at base of second, its hind margin oblique, 

 dorsal edge of next two knifelike. Ventral spine bristly, broad at 

 base and tapering toward apex, mounted in balsam as broad as long. 

 Using width of head as a base, the length of mesonotum ratio is .8, 

 antenna 2.6, ovipositor 2.4, wing 1.1. Length 1.25-2.-15 mm. Average 

 of 14 specimens 1.97 mm. 



Type.— C^t. No. 27200, U.S.N.M. Type and 5 paratypes. Para- 

 types in American Museum, Field, and Stanford. 



Host. — Quercus cjarryana. 



Gall (fig. 40). — A globular knob on a cylindrical stalk hanging 

 from a vein on under side of leaf in autumn, dropping with the leaf, 

 single or but few on a leaf, covered with a dense short woolly white 

 pubescence which weathers away in old galls. They measure up to 

 5.5 mm. long by 2.5 mm. in diameter. Monothalamous. The pub- 

 escence consists of a dense layer of short brownish hairs like an inner 

 fur at base of the long white hairs. Underneath is a thick brownish 

 stony-hard layer and within a thin layer of light colored tissue in 

 which is the larval cavity. 



Rahitat. — The type material was collected in Sequoia National 

 Park on September 8, 1922, on the scrubby Kaweah oak above the 

 Cedar Creek checking station on the Giant Forest road. Living 

 flies were cut out of the galls on November 13. The galls were also 

 collected at Fort Jones and Scott Bar, Calif., and at Siskiyou, 

 McLeod, Wolf Creek, Oakland, Cottage Grove, and Salem, Ore. 

 Fresh galls reach their full growth in late July. 



XANTHOTERAS TUBIFACIENS. new species 



Female. — Dark reddish-brown; face, sides of pronotum, and 

 mesonotum covered with appressed white pubescence. Head coria- 

 ceous; from above as broad as thorax, cheeks not broadened behind 

 eyes, occiput slightly concave: from in front facial quadrangle one 

 and three-tenths times as broad as high, malar space .55 eye without 

 groove, antenna 14-segmented, lengths as (scape) 11 : 6 : 12 : 10 : 9 : 8 : 7 : 

 7 : 6.5 : 6 : 6 : 6 : 5.5 : 7. Mesoscutum smooth with setigerous punctures. 



