63 



ENTOMOLOGICAL NOTES, CAPTURES, &c. 



PiERis RAP^ IN Canada. — In the annual address read before 

 the Entomological Society of Ontario, the following paragraph 

 appears : — " Pieris 7'ap(e, although still plentiful, is no longer the 

 terror to cabbage growers it formerly was, its natui'al enemies 

 having multiplied to an extent sufficient to keep it within some 

 reasonable degree of subjection." It will be remembered that 

 the parasites of this butterfly were collected in Europe, and sent 

 out to North America upon the appearance of P. rapce becoming 

 too numerous after its introduction to that continent. — John T. 

 Carrington. 



EucHLOE cardamines IN AuTUMN. — I noticed, in a late 

 number of the ' Entomologist,' a record of a specimen belonging 

 to the second brood of this species. I have much pleasure in 

 corroborating the statement of your correspondent, for on 

 the 13th of September, 1886, I saw several flying about on 

 the furze-plat near this place. I captured four males and one 

 female, and could have taken several more. Their colour is very 

 bright, and by no means less vivid than in vernal specimens. 

 The occurrence of a second brood of E. cardamines is so 

 extremely rare that I shall be glad if any of your readers can 

 ofi"er me an adequate explanation. — Sydney Haylock ; Rosemont, 

 Maidenhead, January 13, 1887. 



Retarded emergence of Euchloe cardamines. — In the 

 spring of 1885 I purchased some pupte of E. cardamines, and 

 most of them emerged in the breeding-cage at the usual time 

 during the earlier half of that year. The cage containing the rest 

 of the pupse, which were supposed to be dead, as also others which 

 were really so, was put away some time about the following 

 December. It was not looked into again until July, 1886, when I 

 was surprised to find that two imagines, one male and the other 

 female, had in the interval come out and died. I believe that such 

 retardation among Rhopalocera is far from usual. Prof. Westwood 

 (' Mod. Class, of Insects,' ii. 349) refers to a notice of similar 

 retardation having occurred in individuals of the genus Thais, 

 and speaks of that as " the only instance on record of such an 

 occurrence amongst the butterflies." Noticing this, I venture to 

 address you on this subject. Prof. Westwood published his book 



