( xxvi ) 



Ants and Dipterous Larvae. — Mr. Donisthorpe exhibited 

 specimens of Microdon mutahilis bred in his observation nest 

 of Formica fusca from Porlock, also the nest itself with the 

 ants and a live larva of Microdon taken at Porlock, April 

 27th, 1911, and pupa cases and lavae of the fly in spirit. He 

 explained the food of the larvae which was unknown heretofore, 

 and gave some account of the life history ; he also showed a 

 map of its distribution in Britain. 



Mr. W. C. Crawley said that he had found one larva in a 

 nest of Myrmica ruginodis instead of the usual host Forviica 

 fusca. This larva, which was only one-third grown when 

 found, lived from April to August inclusive and reached full 

 size. It was then attacked by the ants when its underside 

 was exposed, and devoured by them. 



Lbpidoptera with the "Neptis" pattern, collected by 

 C. A. Wiggins near Entebbe in 1909. — Professor Poulton 

 exhibited 120 of the 130 insects in the following list — 10 

 examples of N. ophione having been omitted for the sake of 

 convenience. The exhibit had been arranged by Professor 

 Poulton and Mr. C. A. Wiggins, during his visit to England 

 in 1911. All the specimens had been captured in forests 

 within a few miles of Entebbe, between May 23 and July 25, 

 1909. The captures were indiscriminate, so that the following 

 list gives a fair idea of the true proportions in the period 

 under review. 



Ne2dido2)sis o2)hione, Cram. 

 Neptis melicerta, Drury 



,, ayatha, Stoll .... 



„ inetella, Dbl.-Hew. 



,, idcomedes, Hew., var. quintilla, Mab. 



,, nemetes, Hew. .... 



„ saclava, Boisd. .... 



„ nysiades, Hew., ab. continuata, Holl. 



,, paella, Auriv. .... 

 Deilemera leuconoe, Hopff. 

 ,, transitella, Strand 



55 



30 



11 



7 



5 



2 



2 

 2 



1 



14 



1 



Total 130 

 Professor Poulton said that the most astonishing thing 



