THE SWALLOW-TAIL AND THE 'WHITES' 147 



The female butterfly is shown on Plate I, fig. G. From this it 

 will be observed that each of the fore wings is tipped with a rather 

 large smoky-black blotch, in which are four white spots. A double 

 spot of the same colour also occupies a place near the centre of the 

 wing, and another smaller and round one lies near the anal angle. 

 The hind wings are clouded with grey, and bordered along the 

 hind margin with distinct smoky-black spots. 



The male may be distinguished from the female by the absence 

 of the spot near the anal angle of the fore wings, and of all the 

 clouds and spots of the hind wings. Nevertheless the latter have 

 a decidedly clouded appearance, but this is due to the markings of 

 the under surface showing through them. 



The under side of both sexes is most beautifully marked the 

 fore wings resembling the upper sides, but the hind pair chequered 

 with a beautiful soft green on a 

 pale yellow ground. 



The eggs of this insect are 

 deposited during April and May, 

 and again in August or Sep- 

 tember for it is, like the other 

 ' Whites,' double - brooded on 

 two species of Wild Mignonette 

 (Reseda lutea and R. luteola). 



The caterpillars, which are r^GS.-TnE^BATn WHITE - 

 of a bluish colour, with two UNDER SIDE. 



yellow stripes down the back, and 



two others along the sides, may be looked for in June and Sep- 

 tember. Those of the first brood only have been taken in this 

 country, while the others on the Continent change to the chrysalis 

 in the autumn, and hybernate in this state throughout the winter. 



The chrysalis is of a brownish colour, and closely resembles that 

 of the Small White in form. 



Those in search of this rare British insect should wander along 

 the south-east coast, and net all the doubtful slow-flying small 

 Whites (Daplidice is rather slow and heavy on the wing), and 

 their perseverance may be rewarded with a prize that will ever be 

 a reminder of a glorious catch and an eventful day. If you fail in 

 this, and most probably you will, rather than remain a stranger to 

 this beautiful and interesting insect, fill up the blank in your 

 cabinet with a foreign specimen, which can be obtained at any time 

 for a few pence, but be careful to label it ' not British,' in order 



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