104 



a short time bred from it a number of aphides. Other galls which 

 I cut open contained nymphs. The history of the gall is this : the 

 queen aphis punctures the cuticle of the leaf stalk which causes the 

 sap to exude and to form a swelling, which gradually increases in 

 bulk and encloses the queen aphis, leaving only a small aperture at 

 the apex of the gall. In this cavity the queen brings forth a 

 numerous brood of nymphs, which, when they arrive at the winged 

 state, make their exit through the opening at the top of the gall. 

 The shape of these galls is very variable, but the majority of those 

 I picked up were roughly pyriform. Among the specimens I show 

 will be seen a petiole on which there are two galls, one above the 

 other. An illustration of the galls may be found in the late Mr. 

 Edward Connold's " British Vegetable Galls," p. 239, etc., pi. 104, 

 (1901)." 



Mr. Gibbs also showed a new species of the Sijntowichc and 

 communicated the following description : — 



•' I also exhibit a moth which is new to science. It was sent 

 home by ray collector Norton and was taken by him in the moun- 

 tains of Guatemala in December last, at a place called San 

 Cristobol, where the poor fellow died suddenly a few weeks back, 

 and the sad news of his death has just reached me. It is a 

 Chlorostola, and its nearest relative is C. coridon, from which it 

 differs chiefly in the orange-red colour of the terminal segments of 

 the abdomen. I propose to call it Chlorostola phylli.s, n. sp." 



Mr. Dennis exhibited a photograph of the species of Dodder, 

 CiiscHta europaa, parasitical on clover. Mr. Turner reported that 

 the morning party at the Westerham Field Meeting in September 

 met with large masses of the species C. epitl^jwHui on wild thyme, 

 and that when trodden upon and bruised there was a distinctive 

 scent. 



OCTOBER 26tli, 1916. 



The death of a member, Mr. C. A. Briggs, F.E.S., of Lynmouth, 

 was announced with regret. He was a constant attendant at the 

 meetings a quarter of a century ago. 



Mr. Bowman exhibited examples of Aricia vwdon (astro reJw) in 

 one of which the discal spots on the underside lower wings are 

 missing and are replaced by white splashes. Another example was 

 a pure var. ubsolcta in which all the spots on the underside were 



