May— July iSSg.J 



PSYCHE. 



215 



brown at the tip, and thinly set with 

 long hairs. Head, thorax and abdomen, 

 when examined with a power of 50 di- 

 ameters, have a scaled appearance. An- 

 tennae three-fourths the length of the 

 body, 13-jointed, first and second joints 

 stout, third joint longest, last joint 

 nearly equal to the two preceding in 

 length ; slightly clavate and rather 

 densely ciliated throughout ; basal 

 joints, yellowish-brown. Length of 

 body, 1.5 mm. 



Described from a single specimen that 

 issued 30 July. 

 Biorhiza rubinus^ n. sp. 



Galls : When the leaves begin to 

 turn in October, subglobular juicy galls 

 about two or three mm. in diameter and 

 rosy in color are found attached to the 

 under side of the leaves. From a num- 

 ber of these galls collected in October, 

 '87, four were selected and opened 15 

 October ^'$)'^^ from which one fully de- 

 veloped female cynip and three plump 

 white larvae were obtained. 



Gall-fly : Shining black in color ex- 

 cept the joints of the legs which are yel- 

 lowish-brown. Head and thorax appear 

 to be covered with shiny black scales. 

 Clypeus with a number of rather stout 

 hairs ; a very few short hairs on front 

 border of epicranium and on occiput ; 

 vertex bare. Antennae 13-jointed 

 reaching the middle of the abdomen, 

 first and second joints nearly equal in 

 length and rather stout, the first some- 

 what stouter than the second, third joint 

 longest and most slender, third to 12th 

 gradually shortened, 13th once and a 

 half as long as the 1 2th ; brown-black 



in color and covered with a short gray 

 pubescence. Parapsidal grooves are 

 shallow and indistinct, but can be traced 

 about one-third of the way from the 

 scutellum to the collar. Scutellum much 

 rounded behind and with two shallow 

 fovae at base. Abdomen a smooth glossy 

 black. Legs rather thinly set with a 

 gray pubescence ; femora with the same 

 scaled appearance as the head and tho- 

 rax ; thorax sparsely set with short gray 

 hairs. Length 1.5 mm. 



SWAMP OAK {^tierctis bicolor^. 



Holcaspis basset 1 1^1 n. sp. 



Gall : The gall occurs, sometimes 

 singly, but usually in clusters about the 

 twigs. The cluster represented at Fig 2 



Fisr. 2. 



was composed of 30 of these galls closely 



