THE ENTOMOLOGIST. 



51 



with A. inflator. Dr. Giraud tells me in a letter that he takes 

 it for a modified form of the gall of Andricus curvalor. A 

 specimen which Professor Schenck gave me consists of a 

 swelling, almost egg-sha|)ed, of abont 8 millimetres, by 5"5, 

 full of blisters, thin-walled, the surface of which is imeven, 

 covered with leaf-like scales, on one side leaving folds, the 

 margin of which exhibits indistinct traces of leaves; at the 

 bottom of the large cavity lies an oviform inner gall. This 

 swelling is situated in the ujiper angle between the twig and 

 the lateral bud; the latter, however, does not grow on the 

 twig itself, but on a very short stumpy lateral. 



Note 1.— On May 19th of this year (1870?) I found two 

 swollen galls on Q. sessiliflora which seemed to belong to the 

 galls of C. axillaris, although when fresh they differed in 

 appearance. At the beginning of June, 1 opened the 

 larger of the two, the cavity in which resembled the 

 gall of A. curvator, which species I extracted from it. — 

 G. L. Mayr. 



38 rt. Andricus curvator var. axillaris. — From 

 Mayr's note, and a subsequent one under cur- 

 valor, it will be seen that figure 38 « is referable 

 to Andricus curvator var. axillaris, and not to 

 A. inflator. 



This gall is, I believe, tolerably well distributed 

 in Britain : it has occurred, but never connnonly, 

 almost everywhere I have collected, and has been 

 recorded from Scotland (Ballater) by Mr. Traill. 

 Sapholylus connatus, H., is its inquiline, and 

 Megastigmus dorsalis a parasite, both occurring, 

 like the gall-maker, in the early summer. Ratze- ^ 

 l?urg says, in his 'Die Ichneumonen' (ii. 151), 

 "I obtained one female from llerr llartig, which 

 he had determined as Siphouura variolosa, Nees. He had 

 bred his specimens from Cynips disticha and Andricus 

 noduli and inflator." S. variolosa, Nees, is probably a 

 synonym of Ormyrus punctiger, IVestiv., a species which 

 occurs in several galls. In addition to M. dorsalis I have 

 bred Syntomaspis caudata, Nees., Pteromalus sp. ? and 

 Psocus bipunctalus from these galls. — E. A. Filch. 



39. Andricus circulans, Mayr. — In February and March 

 of last year (1809) I found, in the neighbourhood of Vienna, 



CURVATOR 



var. 



AXILLARIS. 



