NEW AMERICAN CYNIPIDS FROM GALLS—-WELD 19 
Host.—Quercus montana, rock chestnut oak. 
Gall—A group of a few hard, stony, cells inside full-grown acorns 
in the fall, lying close to the wall in depressions in normal cotyledons, 
usually at or above the center of the acorn. 
Habitat—The type is from a series bred from acorns collected in Oc- 
tober 1934 on the Blue Ridge, 5 miles north of Bluemont, Va., adults 
emerging on May 8, 1937. Two paratypes are from galls collected on 
Marshall Peak near Washington, Va. Others are from galls collected 
at Kast Falls Church, Va., in October 1930, the oclels emerging on 
April 20, 30, 1934. From two of these aves of collected acorns the 
emergence of an undescribed black species in small numbers suggests 
that there are two species infesting the acorns of this oak. 
CALLIRHYTIS FLORENSIS, new species 
Female.—Uniform light yellowish brown. Head, sides of pro- 
thorax, mesoscutum, and mesopleura beautifully coriaceous; disk 
rugose. Antennae 13-segmented, the first five segments as 12:6: 
14: 12:9, the last two as 5:7. Parapsidal grooves percurrent, median 
short. Wing short-pubescent, nonciliate, veins beyond second cross 
vein colorless, areolet absent. Carinae on propodeum sharply bent. 
Abdomen almost as long as head plus thorax, tergites II and IIL 
forming the dorsal margin, their lengths as 41:5, their hind margins 
impunctate. Ventral valves not conspicuous. Ventral spine in side 
view about twice as long as broad. Using width of head as a base 
the length of mesonotum ratio is 1.16, antenna 2.55, ovipositor 2.5, 
wing 3.5. Length of 45 specimens 1.35-1.65 mm. Average 1.45 mm. 
Closely related to (. clarket Bassett, which differs from it in having 
12-segmented antennae and the mesopleura not entirely coriaceous. 
Male-——Head, thorax, abdomen, scape, coxae, hind femora, and 
tibiae black; rest of antenna, mandibles, fore and middle femora 
and tibiae, and all tarsi yellowish. Sculptured like the female. An- 
tennae 15-segmented, lengths of first five as 12:6:16:13:11; last 
two as 8:9. Ratio 2.9. Wing with short cilia on posterior margin, 
ratio 3.2. Length of 50 specimens 1.15-1.5 mm. Average 1.85 mm. 
Type.—vU.5.N.M. No. 56388: Type female, allotype, 18 female and 
13 male paratypes. Paratypes in the American and Chicago Mu- 
seums of Natural History, Museum of Comparative Zoology, Acad- 
emy of Natural Sciences of Philadelphia, and California Academy 
of Sciences. 
Host—Quercus marilandica. 
Gall (pl. 1, fig. 1).—Scattered about among the stamens in a 
shortened antildin: ‘eomiteell, slightly curved, blunt at apex, 2.2 mm. long 
by 1.0 mm. in dis eter, of same color as the anthers but with longi- 
