VADE MGCUM. 1 Hi 



margins of the wing are browner. Fringe in both sexea 

 above white, and nndemeath white witli brown burs. 



Caterpillar. 



Chrysalis, 



Observation. Found generally in rocky situations covered 

 >vith bushes and Ijrambles, on the blossoms of which it feeds. 

 Their flight is very slow and singular, flapping up their 

 wings nearly togetlier, but though slow, they are shy and 

 diflicult to catch, except with a bag-net fixed to a pole. 



I'OLYOMMATIIS CORYDON, CHALK-HILL BLUE. 



Lewi/i p. 37./. \,2,3. Donovan v. 7, p. 237. Duncan p.3\,fis.3. 



Butterfly. Male. Wings of a pale silvery blue, or French 

 grey, with the posterior margin black or brownish black ; 

 fringe white witli brown bars. Secondarj' in both sexes with 

 five ocellated spots in the posterior margin. Primary wings 

 underneath, whitish, with ocellated spots nearly as in P. 

 Arion. Secondary wings imdemeatli, cinereous, greenish at 

 the btt.se, with about twelve ocellated spots arranged in two 

 bands, the first near tlie base consisting of four, the second 

 below tlie middle undulated consisting of eight, pupils in all 

 black, with white iris ; between the two bands is a white 

 subtriangular discoidal spot, at the posterior margin is a 

 series of ocellated .spots, the intennediate ones crowned 

 internally with an orange black and white angvilar spot ; 

 this series is connec*'d with the central baud by an oblong 

 white blot. Female above, brown, each wing with a pale 

 discoidal dot, whicli in the primary has a black i)upil. 

 Underneath, the same as in the male, but the secondary are 

 deejjer coloured, and the spot more strongly marked. The 

 triangular discoidal spot has a black streak in it. 



Q 



