No. 22] HYMENOPTERA OF CONNECTICUT. 77I 



belonging to the white oak group. Monothalamous. The gall 

 is formed in a cavity, causing more or less bulging and swelling 

 of the acorn cup. It is an elongate body averaging when well 

 developed 5 mm. long and not quite half as wide. The sides are 

 sometimes parallel, but more often slightly bulging or sometimes 

 longitudinally ribbed or smooth; whitish green, yellowish, often 

 with a roseate tinge. The base is truncate and covered with a 

 whitish down. The crown is flattened or slightly concave with a 

 small central conical nipple. The mouth of the cavity in the 

 acorn cup is either strongly fimbriated or simple, according to 

 the nature of the cup scales, and thus either concealing the gall 

 or exposing a large part of it. The larva lies in a cell near the 

 top of the gall. Sometimes the galls deform the acorns." 



(For other species of Andricus see pages 409-434.) 



Rhodites globuloides Beutenmiiller. 



Originally described in Bulletin of the American Museum 

 of Natural History, Vol. xxiii, page 638, as follows : — 



" Female. Head black, finely and evenly punctate, with micro- 

 scopic hairs. Antennae black, first and second joints rufous, 

 third joint piceous. Thorax evenly rugose, subopaque. Anterior 

 lines wanting. Median groove from the scutellum scarcely visible. 

 Parapsidal grooves very obsolete, slightly evident posteriorly. 

 Pleurae rugose, subopaque, somewhat shining beneath the wings. 

 Scutellum very rugose, black. Abdomen and legs rufous. Wings 

 subhyaline, yellowish; radial cell heavily clouded with brown on 

 the veins with the disc hyaline, the brown shade extends be- 

 yond the veins. Length 3 mm. 



" Gall. Polythalamous. Smooth, rounded or oblong, arising 

 at each end abruptly from the branch. Green and fleshy when 

 fresh; and brown, soft and corky when dry. Measures from 

 about 10 to about 22 mm. in width and 35 mm. in length." 



Beutenmiiller records this species from Connecticut. 



Mystic, 3, 12, 14 March, 191 5 (I. W. Davis). 



R. gracilis Ashmead. 



Described in Proceedings U. S. National Museum, Vol. xix, 

 page 135, 1896; reprinted by Beutenmiiller in Bulletin of the 

 American Museum of Natural History, Vol. xxiii, page 645, 1907, 

 and habitat is given as unknown. The original description is as 

 follows : — 



