( clxix ) 



at its softest. The cremastral hooks would finally lose theii 

 hold of the silk pad and the pupa would lie at the bottom 

 of the little earth chamber. When, after twenty-four days 

 or so, the imago emerged, it had to find its way to the surface 

 through the ant passages. This it never failed to do, and 

 the freshly emerged butterfly would be found during the 

 early morning drying its wings on the herbage growing on 

 t he nest. 



Dr. Chapman observed that when ants were placed in a 

 new nest they refused to accept a larva of L. alcon, although 

 they willingly accepted that of L. arion. 



Darkening of hind-wing in Meohanitis polymnia.— Mr. 

 W. J. Kaye exhibited six female Mechanihs polymnia from 

 the Berbice River, caught at Friendship in July 1914 by 

 Mr. H. C. Patoir, which all showed a very considerable darken- 

 ing of the outer half of the hind-wing, one in particular having 

 the whole outer half black. Two female M. polymnia were 

 also shown from the Potaro River, in Central British Guiana, 

 which were the blackest that had been taken, one of which 

 was figured in the Trans. Ent. Soc, pi. xxiii, fig. 3, 1906. It 

 certainly appeared as if towards Surinam the darkening in 

 this species was more pronounced, and probably it would be 

 found the same in the whole mimetic group of which M, 

 polymnia was a member. 



Paper. 



The following paper was read : — 



" The Hymenoptora of Fiji," by Rowland E. Turner, 

 F.E.S. 



Wednesday, December 4th, 1918. 



Dr. C. J. GAHAN, MA., D.Sc, President, in the Chair. 



Nominations for Officers and Council. 

 No alternative names haying been received, the list of the 

 Council's nominees for office for the ensuing year was again 

 read. 



