g30 [December 



costal, which is accompanied by a thickening of that portion of the 

 costal which bounds it; another spot smaller, more indistinct, and 

 sometimes subobsolete, on the tip of the anterior branch of the 3rd lon- 

 gitudinal ; and a third spot of a triangular shape, about the same size 

 as the first but the most conspicuous of the three, which occupies the 

 angle where the costal meets the tip of the 2nd longitudinal, and is 

 accompanied by a decided thickening and blackening of that portion of 

 the two veins which bounds it. Ath. As in afn'cornis there is no cross- 

 vein between the 1st and 2nd longitudinal. — Length 9 .05 — .06 inch. 

 Win--- 9 .07 inch. Three 9 , bred from the gall S. strobiloulcs in the 

 first week of September, along with the two preceding species and great 

 numbers of G. alhovittata n. sp.; % unknown. 



G. D. septem-maculata n. sp. -^ 9. (Recent.) Dull rufous when immature, 

 blackish when mature, beneath paler. Head with the antennre % i longer than 

 the dried body, 2.3— 24 jointed (2-|-21 to 2+22), the flagellar joints globular and 

 coal-black, the last joint oval and i longer than wide, the pedicels whitish- 

 hyaline and about as long as the globular part of the joint, the verticils black, 

 very dense, rather oblique and fully as long as two of the complete joints from 

 which they spring. Antenuse 9 about i as long as the dried body, 13-jointed 

 (2+11), in one recent specimen 12-jointed (2+10), the flagellar joints dusky, 

 twice as wide as in % , short-oval, \—h longer than wide, the pedicels whitish- 

 hyaline and 5 as long as the oval part of the joint, the verticils fully equal in 

 length to the one complete joint from which they spring. Thorax with a row 

 of brownish-yellow hairs in each longitudinal suture of the notum, some irregu- 

 lar lateral ones and the scutel covered with others. Halteres pale. Abdomen % 

 (dried) yellowish-brown. Abdomen 9 sanguineous (both recent and dried), in 

 two dried 9 yellowish brown. Oviduct almost always retracted, when exserted 

 only as long as one abdominal joint. Legs (dried) pale dull luteous, their tarsal 

 tips and often their whole superior surface, except the base of the femora, 

 tinged more or less with dusky, and the entire length of the hind leg % 9 bipec- 

 tinated with very fine, sparse, ciliations as long as the hind fringe of the wings. 

 Wings deeply tinged with dusky, from minute, appressed, dusky hairs, fringed 

 all round, the costal fringe about i as dense and nearly as long as the other 

 part, with 7 obscurely-bounded, whitish-hyaline spots, which are caused by the 

 greater sparseness of the dusky hairs and are situated as follows :— A transverse 

 row of 3 subquadrangular spots placed about i of the way to the tip of the 

 wing, forming a fascia across the entire wing, cut in three only by the 2nd and 

 3rd longitudinal veins, which are dusky here as elsewhere; another subquad- 

 rate one about 3-5ths of the way to the tip of the wing, extending all the way 

 from the 2nd longitudinal tothecosta; another occupying almost the entire 

 space between the forks of the 3rd longitudinal: another which is occasionally 

 subobsolete, in the angle formed by the union of the 2nd longitudinal with the 

 costal; and a subterminal one, very variable and irregular in its shape and 



