338 Annals Entomological Society of America [Vol. IV, 



antennae 14-segmented, filiform, outer third slightly thicker, 1st segment 

 stout, obconic, 2nd subglobular, 3rd longest, nearly as long as 1 and 2 

 together, 4th and succeeding segments to 9th progressively shorter, 

 9-14 subequal, less than one-half as long as 3rd, all sparsely covered with 

 appressed grayish hairs. Thorax faintly rugose and sparsely, in some 

 parts rather thickly covered with appressed yellowish gray pubescence, 

 pronotum narrow in the middle, parapsidal grooves on mesonotum dis- 

 tinctly percurrent, median longitudinal lines reaching half-way to post- 

 erior margin, smooth lines i iver 1 iase i if wings distinct and long, scutellum 

 without distinct foveae, a rather narrow, arcuate transverse groove with 

 smooth shining bottom at base. Abdomen smooth, shining, second 

 tergite produced caudally linguiform almost to apex, pubescent at base, 

 dorsal valve and sheath of ovipositor prominent, the latter with apical 

 tuft of yellowish brown hair. Legs rather stout and clothed with a 

 grayish pubescence. Wings hyaline, pubescent, veins brownish, 

 distinct, radial cell open at the margin, vein at base only slightly bent, 

 radius incrassate at tip just before costal margin, areolet distinct, 

 cubitus nearly or quite reaching basal vein, a small brownish cloud near 

 base of cubital cell, another beneath areolet, and still another at the 

 l .i i iak in anal vein. Length 2.5-3 mm. 



Gall. Moderately large, reddish, echinus-shaped galls attached to 

 the leaves of Quercus douglasi. Numerous pointed processes project 

 from the more "lobular body of the gall, giving it the character- 



istic echinus appearance. The gall is composed of a crystalline sub- 

 stance said to be hardened gallic acid. Monothalamous. About 

 12 mm. in diameter. 



Habitat. St. Helena, Cal. (Miss Julia Begley). Placer 

 County, California (Osten-Saeken). 



Diplolepis douglasi (Ashm.) 



Holcaspis douglasii, Ashmead, Proc. U. S. Nat. Mus., vol. 1!) (1896), p. 127. 



Holcaspi , Dalla Torre & Kiefier, Gen. Ins. Hymen. Fam. Cynip. 



(1902), p. 53. 



Dryophanta di G. Mayr, Verh. Zool. Ges. Wien, vol. 52 (1902), p. 290. 



Diplolepis douglasi, Dalla Torre and Kieffer, Das Tierreich, lief. _'4 Cvn- 

 L910), p. 369. 



Female. Very similar to D. echina, from which it can scarcely be 

 separated except on the character of the gall. In specimens before me 

 I notice the following minor differences: antenna? black distally from 6th 

 segment instead of from 2nd; abdomen black on dorsum only posteriorly; 

 areolet rather indistinct and only the cloud near base of cubital cell 

 present. 



Gall. Pink, star-shaped galls occurring on leaves of Quercus lobata, 

 composed of a crystalline substance similar to the material forming the 

 gall of D. echina, and covered with a pale bloom which imparts a lilac 

 shade to the whole body. The gall is 8 mm. high and 10 mm. in diam- 

 eter, the pedestal widening rapidly to the dorsal rim, which bears about 

 eight irregular pointed projections forming the star. Mononthalamus. 

 Hollow within, the oval larval chamber partly attached. 



Habitat. San Jose, Cal. (R. W. Patterson.) Marin County, 

 California (Beutenmuller). 



