( xxi ) 



Sussex ; and Mr. Geoffrey Meade- Waldo, of Stonewall Park, 

 Edenbridge, Kent, and Magdalen College, Oxford, were elected 

 Fellows of the Society. 



Exldbitions. 



Mr. G. T. PoRRiTT exhibited a pair of jEschna isosceles, taken 

 by him with others of the same species in the Norfolk Broads 

 last summer. The species had been regarded as almost lost to 

 the British list for many years. Mr. W. J. Lucas said the 

 dai"k corner of the hind-wings helped to distinguish it from 

 A. f/randis, as well as the isosceles triangle on the second 

 segment of the abdomen. 



Mr. J. E. Collin exhibited (1) Phora formicamm , Verr., 

 which is parasitic on the ant Lasius niger, obtained by sweeping 

 the herbage in a paddock at Newmarket. In his book, " Ants, 

 Bees and Wasps," Lord Avebury said of this species, " If the 

 nest of the brown ants is disturbed at any time during the 

 summer, some small flies may probably be seen hovering over 

 the nest, and every now and then making a dash at some 

 particular ant. These flies belong to the genus Phora, and 

 to a species hitherto unnamed, which Mr. Verrall has been 

 good enough to describe for me (see Appendix). They lay their 

 eggs on the ants, inside which the larva? live. Other species 

 of the genus are in the same way parasitic on bees." Prof. 

 Westwood as long ago as 1840 (Intro. Mod. Classification Ins.) 

 recorded having " repeatedly observed on disturbing the nest 

 of the common brown garden ant a very minute species of 

 Phora hovering over and flying upon the ants." This species 

 has not been found or recognized by Continental Diptei'ologists. 

 (2) Phora sp. found in a garden at Newmarket, running about 

 at the entrance (which looked like that of a mouse's hole) to 

 the nest of a species of Bomb us. Specimens received from Dr. 

 Sharp labelled " from Bombvis nests," are also the same species. 

 It is evident that its life history is in some way connected with 

 that of the Bombus, but because of the different shape and 

 form of the female ovipositor, it is probably not parasitic on 

 the bee like P. formicarimi is on the ant, but acts as a 

 scavenger, by living on the dead pupae in the nest. 



Commander J. J. Walker exhibited: (1) A sevies oi Buprestidie 



