60 



Mr. Frohawk stated that he considered Colias hyale, L., 

 hybernated in the larval stage, as those he had had feeding 

 did not continue doing so after the third moult, when they 

 were about half an inch long ; they were placed on a window- 

 sill where the temperature during the day was about 50°, but 

 at night fell nearly to 40°. He had tried to induce the larvae 

 to feed by placing them for about three or four days in the 

 sunshine ; but with the exception of one moving slightly it 

 had no effect, and since then none of them had moved at all. 

 Mr. Herbert Williams added that some of his larvae had 

 behaved in an exactly similar manner. 



Mr. Hawes remarked that Hesperia lineola Och., and H. 

 thaumas, Hufn., passed the winter in the tg^ stage. 



DECEMBER Zth, 1892. 

 C. G. Barrett, Esq., F.E.S., President, in the Chair. 



Mr. W. Farren exhibited four aberrations of Papilio machaon, 

 one being minus the second discoidal nervule in both anterior 

 and posterior wings, and consequently one of the submarginal 

 lunules was absent from each wing ; one specimen had the 

 central costal blotch broken and partly merging into the 

 basal patch, and a black line almost uniting it with the costal 

 blotch beyond the centre. In one specimen tiiere was a black 

 spot in the yellow space between the basal patch and central 

 costal blotch ; and in another example the submarginal band 

 was so broad as to partly enclose the discoidal cell, and con- 

 siderably lessen the size of the yellow submarginal lunules. 

 He also exhibited a series of very dark brown and black 

 varieties of Chaiiliodus chcBrophyllellus, Goze., and some 

 Nepticulae pinned with very fine silver pins (Minutien 

 nadeln), and put on strips of soft pith, the pins being too thin 

 to go into cork without bending — silver pins being better than 

 the so-called steel ones, which rust. 



Mr. Frohawk exhibited, on behalf of Mr. F. Merrifield, 

 specimens of Pieris napi, L., Polyommatus phlceas, L., and 

 Vanessa atalanta, L., the pupa having been subjected to 

 various temperatures. Mr. Frohawk stated, with reference 

 to the last-named species, that those specimens which had 

 been kept in a very hot summer temperature, 80° to 90° for 

 six days, had the ground colour of rusty-black, and the under 

 surface uniformly brownish. Those subjected to a cool sum- 

 mer temperature, 54° to 64°, from eighteen to forty- four days, 

 were typical both on the upper and under sides. Others 

 which had been under a spring and autumn temperature of 



