44 ^ . 



Metanotuin black-])rt)\vii, with two parallel carinae. Wings hyaline, 

 fringed, the veins dusky, the first abscissa of the radius angulated. Legs 

 and coxae faint yellow, claws simjjle. Abdomen glabrous, highly polished, 

 not punetulate, dorsally more or less black-brown, the second segment 

 surpassing somewhat the middle, laterally very sloping; ventral-spine 

 four to five times as long as wide. Length of the female 3.5-4 mm. 



Gall: — The gall of this species was found on Quercus agrifolia; it is 

 a bud gall 8 mm. in diameter and more, globular, opaque, yellowish, with 

 som6 sparse brown spots, glabrous, apically with short and sparse hairs 

 and a small wart; the inner substance is brown, spongiose, and encloses a 

 globular, faint yellow, thick-shelled, monothalamous shell 5 mm. in diame- 

 ter and more; wall of the cell 1.6 mm. thick. 



3144 Callirhytis Bakeri n. sp. 



Brown-rod, shagreened and pubescent. Head enlarged behind the eyes. 

 Antennae sometimes black-brown apically, 14-jointed; the second joint 

 longer than thick; the third joint :four times as long as thick, one third 

 longer than the fourth; joints 4-6 subequal, the fourth scarcely longer 

 than the fifth, the eight apical joints gradually decreasing in length, the 

 penultimate one-half longer than thick, a little sliorter than the last, or 

 sometimes only half the length of the last. Thorax scarcely shining; 

 parapsidal furrows obliterated anteriorly; scutellum rugose, the two 

 basal foveae black, deep, separated by a small carina and oblique and 

 divergent; postcutellum and metanotum rugose, the two carinae parallel. 

 Wings hyaline, fringed, veins brown, first abscissa of the radius angula- 

 ted. Legs and coxae faint yellow, claws simple. Abdomen black-brown, 

 highly polished and shining, glabrous, longer than the head and the 

 thorax united, the second segment with a pubescent spot on either side 

 at base; these spots occvipy the basal three-fourths, the segments are 

 microscopically punctured apically; ventral-spine four times as long as 

 wide. Length of the female 3.8-4 mm. 



Gall. — A bud gall on Quercus crassipocula; gall oval, about 13 mm. 

 high and 11 mm. thick, smooth, glabrous, ligneous, apically with a thin, 

 longitudinally striated, thick and more or less bent point which is about 

 8 mm. high and 1.5 mm. thick; proximally with some bud-scales lying 

 close to the base of the gall; the inner substance subspongiose. 



3142 Callirhytis polythyra n. sp. 



Brown-red, coriaceous and pubescent. Head enlarged behind the 

 eyes. Antennae black-brown, 5-jointed and pubescent; the third joint 

 nearly one-half longer than the fourth, which is fully thrice as long as 

 wide, and longer than the fifth; joints 5-7 gradually becoming shorter, 

 the eight apical joints equal, scarcely longer than thick and not enlarging, 

 the last sometimes a little longer than the penultimate. Thorax almost 

 opaque, not distinctly punctured; parapsidal furrows obliterated ante- 

 riorly; the two usual foveae at the base are represented by a large 

 arcuated transverse furrow; metathorax black, the two carinae of the 

 metanotum parallel. Wings hyaline, fringe<l, veins brown; the first 



