268 PAPERS BY DR. B. CLEMENS. 



" I also bred a single imago of this same species, May 11th, 

 from the Cecidomyidous gall, S. rhodoides, Walsh, from 

 galls kept through the winter, and I found in the spring a 

 denuded imago of what was apparently the same species, dead 

 and dry amongst a lot of Tenthredinidous galls, S. desmodiodes, 

 Walsh, MS., which is closely allied to S. pomum, but occurs 

 on the leaves of a very distinct species of willow. Thus we 

 have three different Avillow-galls inhabited by the same moth, 

 two of them made by saw-flies and one by a gall-gnat. 



" I have several times beaten off black-oak trees larva? 

 apparently very similar to this Batrachedra, and with the 

 same harlequin-like markings, but whether the two are speci- 

 fically identical, I cannot say." 



Gracilaria, Zell. 



Proc. Ac. Nat. Sci., Jan. 1860, p. 6 ;* Proc. Ent. Socy. 

 Philad., March, 1863 ;f Id., Dec. 1864, p. 505.| 



I wish to redescribe and change the name of a species, 

 whose history I have ascertained, and which I have recently 

 bred.§ The first description was drawn from a rather worn 

 specimen, but in the main is correct. In order that the 

 species heretofore described may be more readily distinguished 

 I have tabulated them as follows: — 



Legs with white tibia?. 



F. w. costal-half yellow ; dorsal, Desmodifoliella. 

 purple, with central black dot. [p. 269.] 



Legs without white tibia?. 



F. w. with a yellow, trigonal, costal 

 mark. 



Mark large, extended to tip of 

 wing. 



* See ante, p. 91. H. T. S. 

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

 % See ante, p. 257. H. T. S. 



§ Unfortunately Dr. Clemens has omitted to say from what he bred this. 

 Dcsmodium (Tick-Trefoil) is a genus of the Leguminosce. H. T. S. 



