( Ivi ) 



Canon Fowler exhibited specimens of Acronycta alni and 

 Leiocampa dictcea, which came to the electric light on Lincoln 

 Cathedral during the Jubilee illuminations. He also exhibited 

 a specimen of Harpalus melancholicus, Dej., from Kingsgate. 



Mr. Billups exhibited, for Mr. G. C. Bignell, of Plymouth, 

 a case of British oak-galls, as also their makers, and in some 

 cases the parasites. Amongst others there were Spathegaster 

 baccarum, apriUnus, and vesicatrix, Neuroterus numismatis, 

 I(cviuscidus, Ostreus fumipennis and lenticularis, Dryophanta 

 longiventris, agma, and scutellaris, ApMlotrix sieboldi, radicis, 

 alhopunctata, corticis, gemma, &c, Andricus terminatus, Cynips 

 Kollari, and many others. He also exhibited the cocoon 

 and pupa-case of a South American moth, from which he 

 had taken 140 specimens of a parasite of the genus 

 Smicra, showing the enormous fecundity of this species of 

 Ichneiimonidce. 



Mr. 0. Janson exhibited, for Mr. C. B. Mitford, a collection 

 of Lepidoptera from Sierra Leone. 



Mr. White exhibited a female specimen of Composia ohjmpia, 

 Butl., from Florida. He also exhibited, for Mr. Balfe, a 

 curious structure formed by White Ants at Akyab, Burmah. 



Mr. Waterhouse exhibited a series of wings of insects, with 

 drawings and also diagrams, in which he had coloured the 

 veins in accordance with what he believed to be the homo- 

 logies. He said that he found Br. Adolph's three memoirs 

 on insects' wings, in the ' Nova Acta d. ksl. Leop. -Carol. - 

 Deut. Akademie' for 1879, 1884, and 1885, were not suffi- 

 ciently known in England, and he therefore briefly explained 

 the theory propounded by that author ; and also called 

 attention to Herr Redtenbacher's paper (in the ' Ann d. k. k. 

 Naturh. Hofmuseums zu Wien,' 1886) on the same subject. 

 A primitive wing would in a manner somewhat resemble a 

 fan, each fold of the fan being furnished with a longitudinal 

 vein, with numerous transverse veins uuitiug the longitudinal 

 ones. There were, then, two series of veins, an upper series 

 (termed convex veins), and a lower series (termed concave 

 veins). Perhaps the nearest approach to such a wing would 

 be the wing of a locust, or an Ephemera, which Mr. Water- 

 house considered an excellent type. Of the two series of 



