THE CANADIAN ENTOMOLOGIST. 75 



between the covering and the leaf, or cut a hole through the side ; the 

 former is, I think, the plan generally adopted, as I found many clusters 

 partly separated from the leaf and slightly raised, but only a few with a 

 hole cut in the side. The latter may perhaps be the work of a parasite. 



July loth. — Only a few beetles seen, but all were in the nuptial dress. 

 Larvae abundant. 



July 24th. — Only one beetle seen, still in the nuptial dress. Larvae of 

 different sizes plentiful. Some full grown larvae brought home at this 

 date produced the beetle the first week in August, all in fall dress, black 

 and white ; five black spots on thorax. 



August 7th. — Nearly all the larvae being about full grown, have scat- 

 tered over the leaves. Found one group lately emerged and one egg 

 cluster not yet hatched. Found three pupae, one on under surface of 

 leaf, two on upper, and one larva about to pupate on upper surface of 

 leaf. Found one beetle in nuptial dress and one in fall dress. The 

 former with three spots on thorax, the latter with five. 



August 14th. — Found one beetle in nuptial dress ; those in fall dress 

 becoming plentiful. Could find no fresh egg clusters. LarvK of different 

 sizes still on the plants. 



August 2 1 St. — Beetles in fall dress abundant, none seen in nuptial 

 dress ; none seen pairing or moving about. A few larvae still on the 

 plants. Boxed five beetles for home observation. 



August 26th. — Three of the beetles, 2 ^ , i % , taken in black and 

 white dress on August 21st, have changed colour to dull green, with a 

 slight showing of the bright, golden green of the nuptial dress. A larva 

 taken on same date has given a dipterous parasite now in cocoon. This 

 parasite emerged August 30th, but the wings did not fully expand. It 

 belongs to the Tachinidae, but I have no means of identifying it. It is 

 rather smaller than a common house fly, and darker in colour. 



August 27th. — The bright golden green showing more plainly on the 

 three beetles ; the anterior spot on thorax being now a patch of bright 

 green, and the white spots of elytra have almost entirely disappeared. 



September ist. — The three beetles entirely bright golden green ; three 

 spots on thorax. The other pair retained the black and white dress un- 

 changed, all being kept under the same conditions. None paired or ate 

 anything, generally resting quietly on the sides of the box. All died be- 

 fore the end of the month. 



