FKMPELEA CARNELLA. 259 



insects occurred, which was at White Hill, on the 

 race-course at Wye. The plants included Hippocrepis 

 eomosa, Lotus coruiculatus, Echium vulgar e, Thymus 

 serpyllum, Origanum vulgare, Olinopodium vulgare, 

 Calamintha officinalis, Euphrasia officinalis, Poterium 

 sanguisorba, Gentiana amarella, Helianthemum vulgare, 

 and Brachy podium pinnatum. 



The eggs hatched from the 19th to the 21st of the 

 month, and the little larvse were distributed over the 

 potted plants, except two that were confined with a 

 few leaves for a couple of days as an experiment ; I 

 found one of these had taken possession of Helian- 

 themum, and the other of Lotus ; in each instance the 

 stem and leaves were spun together with white silk, 

 whereon minute specks of frass were visible ; they 

 were then transferred to similar plants in the pots, 

 where, through September and October, I was inte- 

 rested in watching them and some of the others that 

 <?ould be detected, but only on those plants, among 

 various surrounding growths ; the tiny creatures 

 extended their webs higher and higher on the small 

 shoots of their chosen sprays, and quantities of frass 

 lay about the earlier portions of web, until the 

 approach of winter, when I saw them no more, for in 

 the following spring their plants could not be found, 

 probably killed by the larval ravages, and the coarser 

 vigorous plants choking them. I found Mr. Jeffrey's 

 experience with a few he had kept for himself corre- 

 sponded exactly with mine. 



Again, in 1878, towards the end of July, Mr. Jeffrey 

 imprisoned some female P. carnella, and their eggs 

 were laid on leaves of Helianthemum and Origanum, 

 and a single egg on a blade of grass ; they began to 

 hatch on the 7th of August, and most of them were 

 placed on good growing plants of Lotus comic ulatus, 

 while four or five were put in another pot on a plant 

 of Helianthemum vulgare ; signs of the larvae were soon 

 seen on the plants by leaflets spun together, and 

 minute specks of frass on the threads, becoming 



