COLIAS EDUSA. 



COLIAS EDUSA. 



Plate I, fig. 3. 



On the 10ta of June, 1867, my friend Mr. James 

 Terry, brought me a fine ? of this species that he had 

 caught with his hat. It measured 2-| inches in expanse 

 of wings, and had evidently been, before hybernation, 

 a splendid insect, though it was then in a worn and 

 ragged condition. 



I placed the butterfly on a plant of Dutch clover 

 (Trifolium rejoens) and stood it in a window facing the 

 west, and supplied it with a little honey and water ; 

 two days later I had the satisfaction of seeing ten 

 eggs. The insect was then removed to fresh plants 

 of clover, but the day following being dull and cloudy, 

 no eggs were laid ; the two succeeding days, however, 

 proving bright and sunny, she recommenced laying, and 

 deposited about forty or more eggs. The weather again 

 becoming dull, there were no additions till the 18th, 

 when on fresh plants another large batch of eggs was 

 distributed ; the following day the insect expired, after 

 depositing the final egg on a spray of Lotus cornicu- 

 latus, placed with the clover as an experiment. 



The eggs were oval, but very sharply pointed at 

 each end, and were laid on the upper surfaces of the 

 leaves in an upright position, standing on end. They 

 were shining and at first whitish-yellow, rapidly turn- 

 ing darker yellow, changing by the fourth or fifth day 

 to reddish and in ten days to pink.* 



The young larvae were at first of a pale brown and 

 afterwards dull green; some were bluish-green, and 

 all with a line of whitish along the spiracles, then and 

 afterwards assimilating well with the clover, of which 

 they ate voraciously. Probably during my absence the 



* At that time being obliged to leave home, I had not the satisfac- 

 tion of seeing the young larvae when first hatched ; but reports of their 

 progress were duly sent to me, whereby I became aware of their 

 beginning to hatch out on the 24th of June. 



