244 AMERICAN HYMENOPTERA. 



Aiidricus fiillawtiyi sp. nov. 



Female.— Head black, minutely rugose, mouth parts brown. An- 

 tennae 13-iointed, brown. Thorax black, finely and evenly granu- 

 lated or shagreened, shining; parapsidal grooves sharply defined, 

 smooth and continuous, converging at the scutellum where they are 

 moderately widely separated, in their course they are slightly curved ; 

 anterior parallel lines very fine and extending to about the middle of 

 the thorax ; median groove scarcely evident or wanting; lateral grooves 

 fine and smooth. Pleurae aciculate and slightly hairy. Scutellum 

 distinctly rugose, slightly hairy, and with two large approximate basal 

 foveae which have the bottoms smooth and shining. Abdomen black, 

 compressed, smooth and shining. Legs brown, coxae darker. Wings 

 hyaline, pubescent, veins brown ; radial area long, open at the mar- 

 gin ; cubitus almost reaching to the first cross-vein ; areolet distinct 

 and well defined. Length 1.50-2.25 mm. 



Gall.— In a mass from a few to twenty or more covered with brown- 

 ish or reddish-brown wool on the underside of leaves of white oak 

 {Quercus lobata) . Monothalamous. The individual gall is thin shelled 

 and oval, light brown with the surface finely granulated. The galls 

 stand upright on the leaf and are close together. The individual gall 

 is 2 mm. high and 1 to 1.5 mm. wide. 



Habitat. — Palo Alto, California. 



The gall very much resembles those of Andricus langerus 

 and Dryophanta ignota. It is the same species which Mr. 

 David T. Fullaway referred to Andricus flocci (Ann. Ent,. 

 Soc. Am., vol. iv, 1911, p. 352), but it is not this species. 

 The seed-like galls of flocci are different as well as the flies. 

 In flocci the foveae of the scutellum are more widely sepa- 

 rated than in fullawayi, while the head of the former species 

 is red and the latter black. The male of fullawayi is not 

 known. 

 Andricus lustraus sp. nov. 



Female .—Head dark reddish-brown, minutely punctate and pubes- 

 cent. Antennae reddish-brown and pubescent, 14-jointed, terminal 

 joints clavate, short and equal in size, joints 3, 4, 5 and 6 elongate and 

 slender, 3d longer than the others. Thorax subopaque, dark pitchy 

 brown-black, distinctly punctate, the punctures in form of pits, pubes- 

 cent. Parapsidal grooves sharply defined and extending from the 

 scutellum forward to the middle of the thorax. They are parallel 

 anteriorly and curved at the scutellum where they are rather widely 

 apart ; anterior parallel lines distinct and extending almost to the mid- 

 dle of the thorax, close to the ends of the parapsidal grooves , lateral 

 grooves broad and extending forward beyond the parapsidal grooves. 



