276 THE ZOOLOGIST. 



Miss E. A. Ormerod exhibited a curious abnormal growth of the flowers 

 of the common ash [Fraxinus) from Osterley Park. 



Mr. Fitch said this gall was the work of Phytopti, and referred to 

 Dr. Franz Low's description and figure (Verh. z.-b. Ges. Wien. xxviii. 134, 

 pi. ii. fig. 2). He directed the attention of the members to an unknown 

 woody, irregularly spherical, gall on the ash-keys, of which he once received 

 two specimens from the late Mr. F. Smith ; one which he opened contained 

 a fat, white, apparently curculionideous, larva. 



Mr. J. B. Bridgman communicated some "Further Additions to Mr. 

 Marshall's Catalogue of British Ichneumonida." Sixty-seven species were 

 added to the British fauna, ten of which were new to Science. 



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

 Hymenoptera." The Diploptera and Anihophila to the end of the Andrenidw 

 were now treated of. 



Prof. J. 0. Westwood communicated a memoir " On the supposed 

 abnormal habits of certain species of Eurytomides, a group of the hymen- 

 opterous family Chalcididce." A general resume of the life-history notices 

 of the Eurytomidw was given; and Prof. Westwood inclined to the belief 

 expressed by Harris, Fitch, and Walsh in America that certain species 

 were phytophagous ; thus having phytophagous and sarcophagous species 

 included in one family, or even genu>. 



Mr. K. A. Fitch could not concur in the belief that any of the Eury- 

 tomidcB were of phytophagous habits, since he had bred many hundreds of 

 specimens belonging to various species from twenty-seven distinct hymen- 

 opterous and dipterous galls, in all of which they were undoubtedly parasitic. 

 He especially referred to Dr. Giraud's and Dr. Mayr's papers in the Vienna 

 ' Verhandlungen' (vol. xiii. pp. 1250-1290, and vol. xxviii. pp. 297-334). 

 The evidence of phytophagism seemed to rest on the "joiut-worm" (Eury- 

 toma hordei, Harris) of America, and on Itosoma hyolipennis, Walk., or 

 I.longipennis, Walk., a species bred from galls on TritUsum in this country. 

 He had bred some scores of this latter insect, but believed it to be parasitic 

 on a dipterous gall-maker, either an Ochthiphila, as stated by Giraud, or a 

 Lonchcea, as stated by Perris. On comparing these twitch-galls with the 

 reed-galls produced by Lipara lucens, Meig. (specimens of both being 

 exhibited), from their analogous structure it seemed fair to conclude that 

 our Triticum gall was produced by one of the Muscida. E. hordei is also 

 more probably a parasite of some Muscid allied to Cldoropa; in both cases 

 the parasite being far more frequently bred than its host. Mr. Fitch 

 exhibited numerous specimens of galls in illustration of his remarks. 



June 7, 1882. — H.T.Stainton, Esq.,F.R.S.,&c., President, in the chair. 



Mr. P. B. Mason exhibited a specimen of Zygoma filipenduUs, var. 



chrysantltetni, Esp., figured by Hubner, which was captured by Mr. J. E. 



