48 [July- 188--?- 



Mr. W. C. Boyd exhibited curious Tarieties oi Fidonia atomaria and Anchocelis 

 pistacina. 



Mr. Billups exhibited a <? of Cryptus titillator. 



Mr. Kirby exhibited bred hybrids between Antheraa Pernyi and Roylei. 



Miss Ormerod exhibited galls on the inflorescence of ash, -which Mr. Fitch said 

 were produced by a species of Phytoptus. In connection with this, Mr. McLachlan 

 called attention to the " sausage gall " on the mid-rib of the leaves of the same tree, 

 occasioned by Cecidomyia botidaria, and Mr. Fitch alluded to a gall on the fruit, 

 produced by an unknown larva, probably one of the Curculionidce. 



Mr. Bridgman communicated a further paper on British Ichneumonidce, supple- 

 mentary to Mr. Marshall's Catalogue of that family, published by the Society. 



Mr. E. Saunders read a continuation of his Synopsis of British Aculeate 

 Hymenoptera. 



Prof. Westwood sent an extensive memoir on the habits of the EurytomidcB, a 

 family of Chalcididce, but of which one or two species, known as " joint worms," 

 appeared to be non-parasitic, and to be directly the cause of the swellings on the 

 stems of various cereals, &c., thus occasioning much damage. One of the most 

 notorious of these was Eurytoma hordei. This paper occasioned much discussion, 

 and Mr. Fitch avowed, as his belief, that all the Eiirytomidce were purely parasitic. 



Ith June, 1882.— The President in the Chair. 



Dr. Mason exhibited a variety of Zygctna filipendulcB from Bewdley Forest, in 

 which the bronze-green ground colour had invaded and obliterated the spots of the 

 anterior-wings and the corresponding colour in the posterior (such a variety was 

 known as chrysanthemi, Hiibner), and in connection therewith a parallel variety of 

 Callimorpha dominula. He also called attention to two species of Noctuida that 

 had found their way into the British List. The first of these was Xylophasia 

 ZolJikoferi, the supposed British specimens of which, he said, were only bleached 

 examples of the dark variety of X. polyodon (he exhibited an individual of the true 

 Zollikoferi) ; the second was Agrotis helvetina, of which he exhibited both the true 

 species, and a specimen upon which it was introduced as British ; this latter was 

 very difPereut, and, in his opinion, was a bleached variety of Noctua augur. 



The President stated that so far as his experience went this year, all the larvae 

 of Nematus rihesii (the gooseberry saw-fly), which had been hatched this season, had 

 died when quite young ; currant leaves riddled with small holes were not unfrequent, 

 but he had not yet seen a single leaf that had been stripped by these insects ; last 

 autumn he had noticed a similar mortality amongst the young larvae of this species, 

 but this season it seemed so general (at any rate in his locality) as to threaten 

 the extinction of the species. 



Mr. McLachlan read a List of British Trichoptera, brought down to date, with 

 especial reference to the Catalogue of British Seur^ptera, published by the Society 

 in 1870, noticing such additions and corrections as had occurred or become necessary ; 

 152 British species were now known, indicating an addition of twenty per cent, 

 since 18G5, when the Monograph of British Caddis-hies appeared. 



Mr. Distant read a paper on new species of CicadidcB from Madagascar, in 

 which he alluded to the genus Flatypleura as occurring nearly all over the world. 



Mr. Butler communicated a continuation of the series of papers on the Lepidop- 

 tera of Chili, collected by Mr. Edmonds, and especially concerning the Geometridce. 

 In connection with some remarks made by the author, as to the difficulty of deter- 

 mining the species noticed by Blauchard, in Gay's" Historia Fisica," Mr. McLachlan 

 expressed liis belief that most of the types of species indicated in that work still 

 existed in the Natural Uistorv Museum of Paris, and had been overlooked. 



