( xiv ) 



The worker (ergates) is without wings, the thorax is simple, 

 the eyes are small and the ocelli are often wanting. 



The pterergate is a worker with vestiges of wings on a normal 

 thorax. 



The micrergate is a worker of unusually small size. 



The mermithergate is an enlarged worker produced by the 

 presence of an intestinal worm of the genus Merinis. 



The plerergate is a worker which in the callow stage has 

 acquired the habit of distending the gaster with honey. 



The phthisergate is a pupal worker produced in a similar 

 manner to the phihisaner. 



The macrergate is an unusually large worker, often only 

 produced in populous colonies. 



The gynaecoid is an egg-laying worker. In some families 

 the queen phase has disappeared, and has been replaced by a 

 gynaecoid worker. 



The dinergate, or soldier, is characterised by a huge head 

 and mandibles, adapted for crushing seeds, fighting, etc. 



The desmergate is an intermediate form between the dinergate 

 and the normal worker. 



Mr. DoNisTHORPE said that however well they had fed 

 their ants, they had never succeeded in rearing females in 

 captivity. 



Prof. PouLTON asked whether there was any difference 

 between the workers and the males produced from eggs laid 

 by workers and those produced from the eggs of normal 

 females. Mr. Crawley replied that there was not. In 

 answer to a question by the President as to the meaning of 

 the expression " highly or slightly developed " applied to the 

 genital armature of the male, Mr. Crawley replied that he 

 only meant of large or small size. 



Living Larvae and Imagines of Agriades thersites. — 

 Dr. T. H. Chapman exhibited a J and ? imago of Agriades 

 thersites, alive, bred from the egg; also two last-stage 

 larvae. He proposed to offer the Society at its next meeting 

 a short paper with notes on the Life History of the species ; 

 this exhibit would have been more appropriate then, but the 

 living material would then possibly not be available. 



Gynandromorphic Eriogaster lanestris. — Mr. H. Main 



