122 POLYOMMATUS (LYOJENA) AGESTIS. 



On the sides of the fifth to the tenth segments are 

 double oblique lines slanting backwards and down- 

 wards, of paler green in front and darker green 

 behind than that of the ground colour. At this stage 

 of growth the lateral projecting ridge of swellings 

 broadly pink, with scarcely an indication of a central 

 paler stripe; the belly and ventral prolegs pale 

 yellowish-green ; the anterior legs flesh colour. The 

 head black, the base of the papillae flesh colour, and a 

 streak of the same above the mouth. 



On approaching full growth its length is about half 

 an inch ; the oblique stripes gradually disappear, and 

 its green colour becomes rather darker; a pinkish- 

 white stripe runs along the lateral prominences, 

 broadly bordered above by a stripe of rose-pink, and 

 beneath by a broader stripe of still darker pink. The 

 spiracles are flesh colour, situated in the upper pink 

 stripe, very minute and inconspicuous. The ventral 

 prolegs green, the anterior legs pinkish, spotted with 

 brown. 



Two changed to the pupa state on May 21st, and 

 a third a week later, all in nearly perpendicular posi- 

 tions, amongst, and slightly attached to, the stems of 

 the Helianthemum by a few silk threads near the 

 ground. 



The pupa is about four lines in length, smooth, and 

 without polish, rather thick in proportion, the head 

 rounded and prominent, the thorax rounded above, 

 the abdomen plump and curved a little backwards, its 

 extremity being hidden in the shrivelled larva-skin 

 which adheres to it. The colour of the head, thorax, 

 and wing-cases blue-green, a black curved streak 

 obliquely placed on each side of the head ; the abdo- 

 men yellowish-flesh colour, a deep pink stripe at the 

 sides enclosing a central white one, which can also be 

 seen showing through part of the wing-covers. 



Two of the butterflies appeared on June 13th and 

 14th. (W. B. ; E.M.M. Y, 176.) 



