107 



JANUARY xoih, 1901. 



Mr. W. J. Lucas, B.A., F.E.S., President, in the Chair. 



Mr. Robert Adlcin exhibited a specimen of Hepialiis 

 sylvanus together with its pupal skin, which he took on the 

 Downs near Biding Gap, Sussex, on September 4th, igoo, 

 while drying its wings at rest on a plant of viper's buglos 

 {Echiuni inili^arc), from the root of which the pupa skin that 

 it had just vacated was protruding. There was ver}- little 

 vegetation on the part of the Down where it was taken, and 

 he had no doubt that the larvae had fed in the root of the 

 Echiuni, which he thought was an unusual food-plant for the 

 species. 



Dr. Chapman exhibited a nice series of Argynnis thore 

 taken at Pontresina, some six thousand feet above the sea 

 level in the Italian Alps. 



Mr. Henry J. Turner exhibited specimens of the locust, 

 Lociistn vividissima, which had been taken at Ventnor two 

 years ago, where it was very common, together with a dried 

 specimen of the milk thistle, Cardiius {Sylibuni) marianuni, 

 found growing wild on the southern slope of the chalk ridge 

 near Swanage. This plant is a native of Spain and the 

 South of France, but has become naturalised in places in 

 this country. 



Mr. Montgomery exhibited a long series and contributed 

 the following notes on Colias cdusa, Fb. and its var. helicc 

 in igoo : 



"A typical female, taken at Hanwell by Mr. A. U. Battley, 

 August igth, and presented to me, deposited about 180 ova 

 on cut sprays of Lotus cornicnlatns between August 20th and 

 27th, and died August 28th. The ova began to hatch August 

 26th, twelve being infertile. 



" The larvae (167) at first did well ; moulted — ist, Septem- 

 ber 2nd ; 2nd, September 6th ; 3rd, September 14th ; 

 and the last, September igth. After the final moult their 

 condition was most unsatisfactory ; many refused to recom- 

 mence feeding, others became full fed and would not spin up, 

 whilst the majority spun up and refused to pupate. The 

 first larvae spun up on September 30th, and pupated on 

 October 3rd. Pupae were placed on sides and top of larva cage, 

 but in not a single instance on the food-plant. Many pupae 

 died, most soon after changing, others just as the pigment 

 was visible through the wing-cases. 



