xxu 



Wednesday, April 5th, 1922. 



The Rt. Hon. Lord Rothschild, F.R.S., etc., President, 

 in the Chair. 



Election of Fellows. 



The following were elected Fellows of the Society : — 

 Messrs. William George Clutten, 136, Coal Clough Lane 

 Burnley; Edmund James Pearce, The Lodge, Corpus 

 Christi College, Cambridge; George E. Hutchinson, Ays- 

 thorpe, Newton Rd., Cambridge; Charles H. Lankester, 

 Cartago, Costa Rica ; Arthur D. R. Bacchus, 29, Abbotsford 

 Rd., Redland, Bristol; and Captain Douglas S. Wilkinson, 

 Kennington Vicarage, Ashford, Kent. 



Exhibits. 



Mimetic Insects. — Lord Rothschild exhibited a group 

 of mimetic Lepidoptera and Hymenoptera and made the 

 following remarks : — 



" The insects I exhibit — 3 species of Amatidae (Synto- 

 midae) of 2 genera and 1 species of Aegeriidae of the order 

 Lepidoptera, a species of Braconidae (parasitic Hymenoptera) 

 and a species of Vespidae of the order Hymenoptera — all 

 show the same colour pattern, viz. black or brown with the 

 apex of the fore-wings white. In addition to those exhibited 

 there are 4 other Hymenopterous insects showing the same 

 colour pattern, viz. Monohia apical if or mis Sauss. (Eumenidae) 

 and Iphiaulax {Ipohracon) sernialbus Szep., Ipobracon sp. 

 and Microdiis simulatrix Cam. (Braconidae). In the case 

 of the Lepidoptera, the resemblance to the wasp is apparently 

 protective, but the examples of the Braconid parasites are 

 more obscure, though the resemblance to the wasp with its 

 formidable sting is also probably protective. 



" The species exhibited are Amatidae : Pompyliodes albo- 

 marginata Druce, Pompyliodes aliena Wlk., and Amycles 

 anthracina Wlk. Aegeriidae : Aegeria sp. (Lepidoptera). 

 Vespidae : Parachartergus apicalis Fabr. Braconidae : Ipo- 

 bracon sp. (Hymenoptera)." 



