105 



including series of A. iris and A. ilia with ab. pallescen.s, ab. iliades, 

 ab. cltjtie, and various intermediates between these forms. 



Mr. C. B. Williams exhibited two of the large living larvse of 

 Satiirnia pi/ri, from Syria. He stated that he had examined specimens 

 •of the willow-gall which had been exhibited at the last meeting, and 

 had found two examples of a mite of the genus Eriophyes. On the 

 continent a gall of the willow has been recorded as due to a species 

 of this genus, and the two are possibly identical, in which case it is 

 doubtless a recent introduction from the continent. Mr. Step said 

 that in the specimen he had examined he had found no traces of 

 mites, or other clue to the formation of these " witches' brooms." 



[It has been ascertained since that they are caused by the 

 Activities of Erioplnjes triradiatm. — Ed.] 



Mr. Hugh Main exhibited a living pupa of S. pyri from Lugano ; 

 aIso eggs of a species of Ascalaplius from the South of France. 



Mr. Dennis exhibited Centanrea sohtitiali)>, a rare alien plant, 

 which was found occasionally in the South of England. His 

 specimens were obtained at Cobham, Kent. 



Dr. Chapman exhibited the cases of a psychid, Oreopsi/che pyre- 

 naella, from Gavarnie in the Pyrenees, and stated that it appeared 

 to remain two years in the larval stage, since small cases could be 

 found as well as the full-size ones, and a peculiar circumstance 

 resulted, viz., that in any one area they were abundant only in 

 alternate years. The cases are beautifully made, with transverse 

 sticks (grass?). For pupation the larva fastens itself on some 

 plant and covers its case all over with a cocoon-like shroud of silk, 

 making the disturbed specimen look as if mouldy. The male larvae 

 moult after doing this, and later moult to pupae. The females 

 appear to make only one moult to pupae. They are rather freely 

 parasitized by a dipteron belonging to the genus Tachina, and by a 

 true Iclineumon, 



AUGUST 27th, 1914. 

 Mr. a. E. Gibbs, F.L.S., F.E.S., Vice-Premlent, in the chair. 



Mr. T. W. Hall exhibited several aberrations of Fulyoiiiinatus 

 iearus, including a very brilliant blue female from Hertfordshire, 

 fine radiated underside form, some dwarf females from Folkestone, 

 a brown female with a curious horizontal streak on the forewings, 

 And a male with bleached patches at the costa of the forewings. 



Dr. Chapman showed imagines and parasites of (Jreopsyche pyre- 



