54 



a garden at Bexley, in Kent, early in May last ; they com- 

 menced to spin their cocoons on the 17th of that month, and 

 the moths emerged between June i6th and 27th. There 

 were four other and smaller clumps of Delphinium in the 

 same garden, but a careful search of them produced only two 

 or three larvae each. 



" The series of P. gamma consist of the parent moth and 

 part of her descendants, also an example reared from a wild 

 larva. The parent moth, an undersized, travel-stained 

 individual, was found hanging from a window curtain in my 

 house on June 24th last. She appeared to be utterly 

 exhausted, and as the house was shut up for the night at the 

 time when I found her, I put her in a pill-box intending to 

 throw her away in the morning, but overlooked the box for 

 a couple of days, and was surprised when I did look at it to 

 find that she had deposited a quantity of eggs. These 

 hatched on July 2nd, fed up rapidly on Dahlia, two large 

 plants of which they consumed, and commenced to pupate 

 on July 2ist, the moths emerging between August 5th and 

 12th. The whole brood, like their parent, are, as compared 

 with the specimen bred from the wild larva, somewhat under- 

 sized and dull in colour. I have little doubt that the parent 

 was an immigrant, and probably so worn out when captured 

 that she would have deposited ova just where she alighted, 

 the chances of their succeeding or not depending simply on 

 the possibility of the young larvae on hatching being able to 

 reach suitable food. 



" On comparing the cocoons of the two species it will be 

 seen that those of P. moneta are well formed, tough, and 

 bright yellow in colour, reminding one forcibly of the ' silk- 

 worm ' cocoons of his younger days, when the loose outer 

 silk had been stripped off; while those of P. gamma are of 

 the flimsiest description, too flimsy indeed to retain their 

 shape when handled, and of a pale dirty grey colour." 



Dr. Chapman, referring to the large number of P. moneta 

 larvae being found on the one clump of Delphinium, remarked 

 that Cnethocanipapityoca^npawsiswell known to affect particular 

 pine trees, and to inexplicably avoid indiscriminate feeding. 



Mr. Adkin also exhibited a series of Boarmia rcpandata 

 taken by Mr. McArthur in the Isle of Lewis during the past 

 summer for comparison with series captured both in 1887 and 

 igoi, which Mr. McArthur exhibited and called attention to, 

 together with a case showing the manner in which this 

 species rested on the rocks. Concerning these exhibits Mr. 

 McArthur contributed the following notes : 



