99 



the habits of some of the species in Southern Europe, and 

 made some observations on the habits of Thais medesicaste 

 and T. polyxena, Gonepteryx rhamni and G. cleopatra, Etichloe 

 cardauiines and E. etcphenoides, Anthocharis belt a and A. 

 tagis. He referred to the great difference in flight between 

 Anthocharis and Euchloe, and stated that the flight of Pieris 

 daplidice was much more hke that of Anthocharis than 

 that of Enchloif or Pieris. He touched on the hybernation 

 of Colias in Southern Europe, and stated that there was now 

 no doubt that the natural hybernating stage of both C. 

 hyale and C. ediisa was the larval, and that this probably led 

 to the extermination of these insects after each immigration 

 into this country. 



Dr. Chapman said that the method of pupation of the 

 genus Thais was most curious. The larva made a tail-pad 

 of silk like the Pierids, and also a girth in the same way and 

 position. Immediately after the change, and while the pupa 

 was still soft, the girth was slipped forward and attached to 

 some hooks near the anterior tip of the pupa. There were 

 not three pads, as some writers had observed. He had 

 also noted that the pupa very soon became stiff after the 

 change. 



MAY 26th, 1898. 



Mr. J. W. TuTT, F.E.S., President, in the Chair. 



Mr. Edwards exhibited two very large prawns (probably 

 PalcEmon lar) from Madras, and also a living specimen of a 

 scorpion (Euscorpius) found by himself in considerable 

 numbers under stones in the neighbourhood of Cannes. 

 He said that it was an adept at catching flies, and fed 

 readily upon 3'oung cockroaches. 



Mr. West, of Greenwich, exhibited a series of the smallest 

 British water-bug, Microvelia pygmcea. He stated that it ran 

 over the surface of the water. 



Mr. Turner exhibited a life-history series of Coleophora 

 genistcscolella from Carlisle, showing imagines and cases 

 made by the larvae on the food-plant Genista anglica (the 

 petty whin). He stated that the larvae and cases were to 

 be obtained at Oxshott, where the members who attended the 

 field meeting on May 21st found them. He also exhibited 

 a very perfect fossil specimen of the Trilobite, a very early 

 form of Crustacean, from which our crabs were doubtless 

 derived. 



The collection of slides formed by the South-eastern Union 



