ART. 19. GAIXFLIES OF THE FAMILY CYNIPIUAE WELD. 27 



sected out one and one-sixth times as long as antenna. Using width 

 of head as a base the length of mesonotiim ratio is 1.4, antenna 2.0, 

 ovipositor 2.3, wing 4.2. 



Length of 5 pinned specimens 3.0-3.8 mm. Average 3.4 mm. 



Type.— Cvit. No. 22009, U.S.N.M. Two cotypes. 



Host, — Quercus marUandica Muenchhausen. 



Gall. — Produced in fall on small acorns of current season, some- 

 times three or four on one acorn. They are green, smooth, 4 mm. 

 in diameter, laterally compressed and elongated slightly at base and 

 apex. They secrete copious quantities of honeydew while growing 

 and later fall to the ground. 



Habitat. — The type material was collected at Ironton, Missouri, 

 October 5, 1917, and the flies emerged March 25-April 18, 1919. 

 These galls have been noted at Texarkana, Arkansas; Palestine and 

 Cuero, Texas; Troy and Dothan, Alabama; and Marianna and River 

 Junction, Florida. 



CALLIRHYTIS BALANOIDES, new species. 



Plate 3, fig. 7. 



Female. — Eed anterior and lateral lines, base of scutellum, dorsal 

 part of abdomen, tibiae and tarsi infuscated. Head as broad as 

 thorax, coriaceous, seen from above widened behind eyes, thickness 

 .4 width; seen from in front widest above level of antennae, facial 

 line .73 transfacial, interocular area 1.59 times as broad as high, an- 

 tennocular and ocellocular spaces equal, malar space .5 eye and with 

 groove, mandibles 2-toothed, papli 5- and 3-segmented, antennae 14- 

 segmented, third longest, fourth .83 third, gradually decreasing to 

 13, last 1.4 times preceding, face slightly pubescent. Pronotum finely 

 rugose. Mesoscutum dull, coriaceous and finely rugose with incon- 

 spicuous setigerous punctures, parapsidal grooves shallow, sculptured, 

 percurrent, separation behind greater than that between anterior 

 lines, pubescence not hiding sculpture. Scutellum rugose with two 

 large smooth oval pits at base, triangular impressions on sides. 

 Carinae on propodeum outwardly curved, inclosing a rugose area 

 slightly broader than high. Mesopleura striate. Hind tarsus shorter 

 than tibia, second shorter than fifth, claws simple. Wing hyaline, 

 subcosta and cross-veins brown, rest paler, first abscissa of radius 

 arcuate, areolet reaching one-seventh and cubitus about one-half way 

 to basal, surface short pubescent, margin not ciliate. Abdomen longer 

 than high, slightly compressed, second tergite occupying .7 its length 

 with sparsely pubescent patches at base, ventral spine in balsam 2.5 

 times as long as broad, ovipositor when dissected out about 1.2 times 

 length of antenna. Using width of head as a base the length of 

 mesonotum ratio is 1.4, antenna 2.8, ovipositor 3.4, wing 3.36. 



