QS PROCEEDINGS OF THE NATIONAL, MUSEUM vol. CS 



emerged by June 1, 1918. Galls at Hoxie on lyrata contained pupae 

 November 16, and adults emerged at Evanston, 111., May 16-20. On 

 the twigs the old galls may be found from which the wool has weath- 

 ered away, leaving a hard woody mass with exit holes in. 



ANDRICUS ALBOBALANI, new species 



Female. — Black, abdomen, legs and base of antenna red. Head 

 from above transverse, broad as thorax, broadened behind eyes: 

 from in front transversely elliptical, malar space one-half eye, with 

 fan ridges, antennae 14-segmented, lengths as (scape) 12 (width 

 5) : 7 (4)^ : 12 (3.5) : 11 : 10 : 9 : 8 : 7.5 : 7 : 7 : 7 : 6.5 (4.5) : 6 : 7 (4) . Thorax 

 covered with appressed whitish pubescence. Mesoscutum broader 

 than long, rugose, parapsidal grooves narrow, deep and smooth be- 

 hind, becoming lost in sculpture anteriorly, no median. Disk rugose 

 with two incompletely closed and separated pits at base. Carinae 

 on propodeum bent outward enclosing a smooth area broader than 

 high. Polished spot on mesopleura. Hind tarsus shorter than tibia. 

 its segments as 24:11:7:5:12, claws weak, bidentate. Abdomen 

 equal to head and thorax, length to height to wudth as 30:24:17, 

 second and third tergites showing dorsally in proportion of 22:10, 

 second with pubescent patches at base, ventral valves protruding, 

 ventral spine tapering, in side view five times as long as broad, 

 slightly hairy. Using width of head as a base the length of mesono- 

 tum ratio is 1.2, antenna 1.9, wing 3.5, ovipositor 2.4. 



Range in length, 2.2-2.9 mm. Average of five, 2.6 mm. 



Type. — Cat. No. 27207, U.S.N.M. Type and one paratype. Para- 

 types at American Museum, Field, and Stanford. 



Host. — Querc us dumosa. 



Gall (fig. 45). — A single non-separable cell developed in the wall 

 of acorn toward its base. Affected acorns are undersized, lopsided, 

 firmly fastened in cup and remain on tree. Sometimes two in an 

 acorn. Exit hole in wall of aconi near apex. Found in fall and 

 winter. 



Ilahitat. — Tyi)e locality, Boule^■ard, Calif., where affected acorns 

 were collected on March 2, 1922, and seven living adults cut out. 

 Transformation probably occurs in the fall and emergence in the 

 spring. The finding of larvae in a few of the galls in March indi- 

 cates that some individuals hold over and emerge the second spring. 

 Similar galls were seen on the same oak at Descanso, Paraiso Springs, 

 Los Gatos, St. Helena, and Lakeport. 



ANDRICUS BICONICUS, new species 



Female. — Black: mandibles, antennae, parts of legs brownish; ab- 

 domen reddish below. Head finely coriaceous with setigerous punc- 

 tures, face pubescent : from above transA'erse, as broad as thorax, 



