THE CANADIAN ENTOMOLOGIST. 



rounded appearance to the apex, which saiinaris has more straight and 

 pointed wings. 



The lack of a well-defined black annulation before the apex of the 

 labial palpi and the presence of the black, longitudinal markings on the 

 fore wings are the most dependable characteristics of salhiaris in differ- 

 entiating it from ga/lcESolidaginis Riley. 



The moths issued from September i-yth. 



Gfioritnosc/ie/na subterranea, n. sp. 



Labial palpi typical in form ; pepper-and-salt-coloured. Antennae 

 with each joint black, brown and white in succession. Face and head 

 whitish, suffused with brown and fuscous. Thorax brown, sprinkled with 

 white. Fore wings rich reddish-brown, in some specimens chocolate, with 

 a more or less irregular sprinkling of black and white atoms. Cilia 

 whitish, sprinkled with brown. Hind wings yellowish-fuscous; cilia gray. 

 Abdomen dark fuscous, with the three basal joints velvety ochreous above. 

 Legs blackish-brown, sparsely sprinkled with white ; tarsal joints with 

 narrow white annulations. 



Alar expanse : 12-20 mm., average 17 mm. 



Habitat : Boston, ]\[ass. Miss Cora H. Clarke, coll. 



Food-plant : Aster fnidtifiorus Alton. 



U. S. Nat. Mus., type No. 13386. 



This species comes between G. gallc^solidag'mis Riley and G. 

 Btisckiella Keaifott, both in size and ornamentation ; it differs from the 

 former in the absence of any trace of a lighter dorsal basal area on the 

 fore wing, though in some specimens there is a faint approach to the other 

 wing-pattern of this species. G. Busckiella, which also feeds on Aster, 

 but which makes its gall on the upper branches of the plant, differs from 

 the present species in its darker colour and the even sprinkling all over 

 the wing of white scales. The galls of the present species are found just 

 underground, or with their upper part just above ground, on the root- 

 stocks of Aster multifionis, with rootlets emitted from their lower end, 

 and the annual shoot from their upper end. They are more or less 

 spindle-shaped, about 15 mm. long by 6-8 mm. in diameter; woody, 

 rather thick-shelled, the pupa filling nearly the entire cavity. The adult 

 issues from a round hole previously prepared by the larva, but not plugged, 

 as in the Solidago gall, merely covered by the outer skin, which is left 

 unbroken by the larva. 



