march, 1864. 243 



third of the wing. Along the base of the costal and apical 

 cilia is a line of black dots and the cilia are discoloured with 

 blackish ; cilia of the inner margin dark gray. Hind-wings 

 pale gray; cilia grayish-ochreous. 



Antenna? blackish, annulated with whitish. Thorax white, 

 dusted with blackish. Head white, with the ends of the scales 

 touched with blackish. Labial palpi blackish ; middle joint 

 with a central and apical white ring; terminal joint with a 

 basal white ring, and one of the same hue, near the apex, 

 which is blackish. 



I have before me a single specimen in good condition, re- 

 ceived from Mr. B. D. Walsh, of Rock Island, Illinois. He 

 says respecting it : " It is a species of which I have bred two, 

 from the oak-apple galls of Cynips quercus-spongifica, O. S. 

 There is also a large Tortrixt larva that eats up the 'sponge' 

 of these galls, leaving the central cell, the imago of which I do 

 not know, but I suspect its normal food is oak-leaves, because 

 I have found a very large Notodonta larva, which I know 

 usually eats oak-leaves, engaged in the same operation. I 

 know nothing of the larva of this species, but am certain both 

 imagos came out of these oak-apples." 



Gracilaria, Zell. 



Proc. Acad. Nat. Sci., January, 1860, p. 6 ;* Proc. Ent. 

 Soc. Phil., March, 1863, p. 9.f 



yiih ^Gracilaria coroniella, n. s. Fore-wings dark yellowish, 

 overlaid with purple. Near the middle of the costa is a large, 

 triangular, pale yellow patch, the angle of which terminates 

 at the fold of the wing and containing on the costa three or 

 four purplish dots. A little posterior to the triangular patch 

 is a small costal pale yellow spot. The apical portion of the 

 wing is yellowish; cilia yellowish, tipped with black. Hind- 

 wings shining gray ; cilia dull dark gray. 



* Sec ante, \\ 91. H. T. S. 

 f See ante, p. 215. H. T. S. 



r2 



