( xxvi ) 



Exhibitions. 



Mr. J. H. Carpenter, who exhibited a number of Colias 

 hyale, said " the ova were obtained from a female taken at 

 Sheerness, Aitgust 18th, 1900, and all had hatched by the 

 end of the month. They fed until early in October, and 

 then entered into hybernation. During the winter months 

 they were kept indoors in a storeroom, which, from its situa- 

 tion, kept at a fairly even temperature, the lowest reading 

 being 42° during some of the coldest nights. The plants of 

 clover upon whic'.i the larvae were then hybarnatmg dried 

 up, and were kept without water ; the object being to keep 

 the larvae free from moisture, and I think that this has been 

 the chief cause of s access. On the third of the following 

 February the larvae started to feed again, but very slowly, 

 and were given all the sunshine that was possible to get 

 during the daytime, and although many died during the 

 period, upwards of one hundred eventually reached the pupal 

 stage, the first to emerge (a male) on May 7th. This is the 

 first time, I believe, this species has been successfully hyber- 

 nated through an English winter, and has fully proved the 

 previously doubtful point in what stage it passes the 

 winter months. Being very doubtful about getting them 

 through the winter, I endeavoured in the September to force 

 the larvae, but no temperature would induce them to feed, 

 and this is one great difference between this species and 

 Colias edusa, whereas some larvae of the latter I had feeding 

 at the same time were easily forced and produced imagos in 

 October. The similarity between the larva? of both hi/ale 

 and edusa is very remarkable, and it would be extremely 

 difficult to separate them but for a few minor details. This 

 is also common to the pupae, the two being almost identical." 



Mr. J. W. Tutt observed that twelve months ago there was 

 no reliable evidence as to the stage in which C. hyale passed 

 the winter, but that Mr. Carpenter had proved that it hyber- 

 nates in the larval state, and pupates and emerges in the 

 spring. No one has yet successfully bred C. edusa through 

 the winter, as they do not and cannot feed up these in this 

 country. In the South of Europe and in North Africa both 



