of certain sjwies of Willow. — Part 2nd. 273 



insect which produces it, and it is quite different from the other gall, 

 being roundish and filled, except a central cell, with white sponge, not 

 elongate-oval and with thin walls like the other. But from a gall on 

 the same plant, and also on the allied Compositous plant Vernonia fas- 

 ciculata. which is externally like the Lepidopterous gall, but is inter- 

 nally filled with brown sponge and numerous cells, I have bred many 

 specimens of Lasioptera solidaginis 0. S., a minute Cecidomyidous 

 fly. Whether this Dipteron is inquilinous in the Lepidopterous gall, 

 or the Lepidopteron in the Dipterous gall, or whether the two galls 

 are distinct and both the Dipteron and the Lepidopteron are gall- 

 makers, I cannot say with any certainty ; but on mature consideration 

 of all the facts now known to me, I incline to the last supposition. As 

 to the burrows in the Tryprta galls noticed by Osten Sacken in the 

 above passage, they are probably made by an inquilinous Sawfly ; for I 

 found, Dec. 25, a living Tenthredinidous larva, .18 inch long, burrow- 

 ing in one of these galls, without at all interfering with the health and 

 prosperity of the obese tenant of the central cell. 



Family Tineid^:. 



GrELECHiA fungivorella Clem. Bred many from the gall S. 

 brassicoides Walsh, Aug. 1 — 15, and a few from S. rhodoides Walsh, 

 (not »S'. sfrobdoides 0. S. as erroneously stated by Clemens,) Aug. 14, 

 both galls being Cecidomyidous and of the same season's growth. Ex- 

 panse .38 — .49 inch. 



G-ELECHIA gall^genitella Clem. Two specimens were bred 

 from S. brassicoides Aug. 7, and two more, pronounced by Dr. Clem- 

 ens to be identical, were bred July 2 from the Cynipidous gall Q. spon- 

 gifica 0. S., both galls of the same year's growth. Expanse .38 — .45 

 inch. I have since bred two more from last year's specimens of the 

 Cynipidous gall Q.fcus Fitch (=Q. forticornis Walsh) April 18 and 

 26. Hence the species would seem to be double-brooded. 



GrELECHiA salicifungiella Clem. Bred six specimens from *S'. 

 brassicoides of the same year's growth Aug. 3 — 13. Expanse .57 — 

 .GO inch. 



Batraciiedra saltcipomoneeea Clem. Bred many from the 

 Tenthredinidous gall S. pomum n. sp. May 8 — 20, one from the Ten- 

 thredinidous gall S. desmodioides n. sp. April 9, and one from the Ce- 

 cidomyidous gall S. rhodoides Walsh, May 11, all from galls of the 

 preceding year's growth ; also a single specimen Aug. 28 from S. po- 

 mum of the same year's growth. Expanse .35 — .15 inch. 



