358 Annals Entomological Society of America [Vol. IV, 



by A. inanis Osten-Sacken, but the average size is smaller and the color 

 of the gall darker. It measures from half an inch to a little over an 

 inch in diameter and is found on Quercus vacciniifolia in California. 



"Gall-fly. Female. Length, 2 to 3.2 mm. Red or brownish 

 red (one specimen has the thorax almost black), antennae and legs 

 brownish yellow, sometimes obfuscated; several terminal joints of the 

 antennae are dark brown. Head closely punctate ; thorax almost smooth, 

 the parapsidal grooves sharply defined, complete, a short median groove 

 posteriorly and the groove on the shoulder indistinct; scutellum rugose, 

 the fovea? large, broad, distinct, and separated only by a carina; meso- 

 pleura smooth, polished, the triangular piece beneath tegulae alone being 

 punctate. The abdomen is longer than the head and thorax together, 

 the segments oblique, the second segment occupies about two-thirds 

 of the whole surface and is a little pubescent at sides near the base, 

 impunctate, some of the short terminal segments a little dusky; spine 

 of ventral valve rather long, hairy. Wings hyaline, pubescent, the 

 veins pale brown; the vein at base of marginal cell is slightly bent, but 

 not angulate, the marginal cell being very long and narrow, areolet 

 distinct, but the surrounding veins delicate, cubital cell almost closed. 



"One of the specimens is but 2 mm. long and of a uniform brownish 

 yellow color, but structurally it does not seem to differ from the others. 



"Type No. 3087, U. S. N. M. 



"Four specimens, reared October 16, and December 4, 1884, from 

 galls collected by Prof. J. H. Comstock, at Truckee, California, on 

 Onerous vacciniifolia." (W. H. Ashmead). 



I have not seen examples of this species. 



Callirhytis maculipennis Kieff. 



Callirhytis maculipennis, Kieffer, Bull. Soc. Metz, ser. 2, vol. 11 (1904), 

 p. 131. 



Callirhytis maculipennis, Kieffer, Invert. Pacif., vol. 1 (1904), p. 42. 



"Black, opaque and pubescent. Head rugose, enlarged behind the 

 eyes; front coriaceous, temples longitudinally striated and finely punc- 

 tured, nearly smooth and shining close behind the eyes. Antennas 

 brownish-red, the last joints more or less fuscous, 14-jointed, nearly 

 glabrous; second joint hardly longer than thick; the third at least 

 thrice as long as thick, the following joints gradually decreasing in 

 size; joints 9-13 nearly equal, one third longer than thick; the last a 

 little longer than the penultimate. Thorax coarsely rugose; mesonotum 

 irregularly rugose posteriorly between the parapsidal furrows, anteriorly 

 and laterally more or less transversely rugulose; parapsidal furrows 

 complete; the four glabrous lines of the mesonotum arc rigid; meso- 

 pleura shagreened and smooth; scutellum hardly longer than wide, 

 rugose, with two triangular foveas at the base and a longitudinal middle 

 furrow in the anterior two-thirds. Metanotum glabrous, shagreened, 

 with three longitudinal carina', the lateral ones curved outwards. 

 Wings hyaline, fringed, with a fuscous spot at the base of the radial 

 cell; first abscissa of the radius angulate. Legs brownish red, hind 

 femora and middle part of the hind tibiae fuscous; claws simple. Abdo- 



