i THE ENTOMOLOGIST. 



rising to a pointed dorsal keel, and sloping posteriorly to the 

 sunken metathorax ; the abdominal segments rise to the third, 

 then decreasing and curving to the anal segment, which termi- 

 nates in a long slightly curved cremaster, furnished with an 

 ample cluster of hooks ; the ventral surface forms a fairly 

 straight line, except bulging at the apex of the wings. Dorsal 

 view : The head terminates in two well-developed points ; 

 there are three points which project laterally on the wing, 

 the first on the base, the second on the inner margin, and 

 the third near the anal angle ; between these points the out- 

 line is concaved, the abdomen gradually tapers to the anal 

 segment, the cremaster is broad, flattened, rounded at the 

 end, and has a sunken centre. On the fourth, fifth, sixth, 

 seventh, and eighth abdominal segments are a medio-dorsal 

 black point and a subdorsal series] of six prominent points, 

 commencing on the second segment, and ending on the seventh 

 segment ; those on the eighth and ninth segments are very 

 small, that on the fourth segment is the largest ; they have pale 

 bases, black centres, and orange tips ; there are also two rows of 

 small black tubercles, the first super-spiracular, the second sub- 

 spiracular; each row is composed of a single tubercle on each 

 segment ; the spiracles are narrow transverse apertures of a 

 dusky colour. The dorsal half of the head and wing points are 

 black, and the ventral half orange. The whole surface is finely 

 and irregularly furrowed and granulated. The ground colour is 

 a pale buff, covered with fine fuscous reticulations. The entire 

 surface is clothed with a whitish powdery substance, giving a pale 

 lilac or pinkish bloom to the pupa, which, however, is easily 

 rubbed oft", the pupa then assuming a brownish hue. I found no 

 variation in the colouring of the pupse ; every one of the number 

 —between fifteen hundred and two thousand — was precisely as 

 described. 



Immediately the pupa rids itself of the larval skin it is so 

 vigorous in its efforts to anchor the cremastral hooks firmly into 

 the silken pad by its twistings and twirlings, that I have seen 

 them actually tear themselves away and fall to the ground. 



From this host of pupae butterflies commenced emerging 

 during the middle of July, and continued until the middle of 

 August, during which time something over fifteen hundred had 

 emerged. From this large number 1 selected a good series, 

 showing considerable variation in the colouring of the borders 

 and blue spots, but I did not succeed in obtaining any striking 

 aberration ; but the majority of the specimens were very fine, 

 and many exceptionally large, a quantity being of greater size 

 than any in my series of British- caught examples, or any 

 European ones I have seen. The largest of these beautiful 

 insects is a huge female measuring exactly 3^ in. in expanse. 



The colour of the marginal band varies from a pale straw- 



