CAPTURES AND FTRLD URPORTS. 851 



spicuous aud nauseous species, which the young birds, &e., quickly 

 learn are distasteful, are simulated by others which are not nauseous, 

 but which have acquired the colours aud markings of inedible forms, 

 aud are thereby protected. Amongst the former are the Heliconinfe, 

 Danainae, and Acrfein*, all of which include amongst their members 

 great numbers of highly coloured species, conspicuous for their mark- 

 ings in red, yellow, black, and blue, with a variety of intermediate tints 

 and shades, and which are easily distinguished in their surroundnigs. 

 In the latter are included butterflies of nearly every sub-family, and 

 some of the diurnal moths, and both are found nearly all over the 

 world. But on examining, with the microscope, the scales on the 

 wings of these mimetic butterflies, it will be found that, so far from 

 the similarity in superficial appearance being produced by similarity 

 in detail and pattern, there is a wide diversity in scale-structure and 

 arrangement. The scales vary not only in number, but in size, 

 colour, and form, and this is the case even where one inedible species 

 mimics another. 



CAPTURES AND FIELD REPORTS. 



PiERis DAPLiDicE IN SussEx. — While collectiug on the dovms near 

 Brighton, on Aug. 20th last, I took a fine male /'. ilaplidicr on the 

 wing. On Aug. 21st I revisited the same spot, and took a very ragged 

 female specimen. Three days later I took another fresh male example, 

 not far from where the others were taken. Both the males are in 

 perfect condition, but the female has not a single perfect wing. All 

 three I observed and took on the wing. — H. Hyams ; 24, Bloomsbury 

 Place, Brighton. 



Argynnis aglaia var. charlotta. — On July 7th last, while collect- 

 ing on the downs near Brighton, I had the good fortune to take a fine 

 A. aglaia var. rharhtta. — H. Hyams; 24, Bloomsbury Place, Brighton. 



CoLiAS HYALE, C. EDusA, &c., AT FOLKESTONE, — The Small visitatiou 

 we had here of C. hi/alr this season seems to have confined itself to the 

 grassy hillsides on the downs. They were not numerous, even in 

 August, and I did not see one in the clover or lucerne fields in which 

 there were so many last year. On Oct. 10th I found it again on tlie 

 downs here, and I saw several males and one female ; I went home for 

 my net, and succeeded in taking two males, one of which was perfectly 

 fresh and latelv emerged, the other very slightly chipped. They must, 

 I think, have all emerged since the wet and stormy weather which 

 ended on Oct. 18tli, and were probably a third brood. Is not this 

 unusual in C. hi/ale I On Oct. 22nd some were still there, and again 

 on the 23rd, on'which day I saw two C. edusa, the only examples I have 

 seen here this season. One I took was rather worn, and I released it. 

 Here we occasionally have an autumn emergence oiLyrmia ininuna ; I 

 took several, rather small and pale, on Aug. 21st, 19U0. I took also 

 Nisoniades tages here on Aug. 9th last, in fairly good condition, but 

 small and pale. — Percy E. Freke ; 7. Limes Road, Folkestone, 

 Oct. 30th, 1901. 



