136 PAMPHILA ACTION. 



themselves within more closely constructed retreats, 

 formed where two blades of the grass obliquely crossed 

 each other ; however, a few days later, probably from 

 the grass not being quite free from mould, two of them 

 abandoned their places, and found others suitable to 

 themselves, where they pupated in horizontal positions 

 under a projecting ledge that supported the glass 

 superstructure of the cage. One of the individuals that 

 remained spun up on the grass and pupated there, with 

 its head uppermost in nearly a perpendicular position. 



The butterflies appeared on July 14th, 17th, and 

 18th, viz. two females and a male ; in each case the 

 imago came forth at night, the insect being ready for 

 flight in the morning. 



The full-grown larvae were from six-eighths to 

 seven-eighths of an inch in length, and iu figure 

 (leaving out the head) tapered a little to each end, the 

 second segment being the smallest and very short. 

 The head swells out again beyond the size of the second 

 segment, but not to such an extent as in some others 

 of the genus. 



But, in justice to Professor Zeller, I will here quote 

 from his admirable observations and account of this 

 larva from the egg to full growth, which were published 

 in 1862 in ' The Weekly Entomologist/ vol. I, pp. 

 10—12. 



" * * * When full grown they seek for a retired 

 shelter, which they find in a corner between some 

 leaves, of which they form a spacious habitation by 

 spinning in the open parts a thin wall of whitish silk 

 web, with large and very irregular meshes ; the 

 resting place being thickly covered with whitish silk, 

 but most thickly where the tail of the larva is to rest. 

 In four or five days it changes into the pupa. 



" This larva is of the general form of Pamphila, i.e. 

 cylindrical, tapering towards the tail and head, the 

 latter being large and, as it were, separated from the 

 trunk by a string. It is of a pale greyish-green, with 

 the dorsal vessel darker, and edged with a slender pale 



