PAMPHILA SYLVANUS. 197 



tinct little ropes of white silk. August 5th two of 

 these larvae were about 12 mm. long, and were then 

 feeding on couchgrass ; of these I have no further 

 record. In 1876, July 13th, butterflies were again 

 caught, and soon laid eggs, the larvse from which 

 hatched on July 26th. On August 13th a larva was 

 measured, it was about 12 mm. long. On August 23rd 

 the larvse had not increased in length, but were grown 

 stouter, and were spinning hiding places for them- 

 selves among the grass blades. On November 16th they 

 were found to be all resting in close fitting, long and 

 narrow, tough silken hibernacula ; the larvae, which had 

 been put upon garden riband-grass, spun among the 

 withered blades, but those, which had been living on 

 narrower grasses, spun in folds of the leno covering of 

 their cage. May 11th, 1877, I found the larvae 

 moulting for the last time, and I believe the full fed 

 larvae were sent to Mr. Buckler. 



In confinement the butterflies laid their eggs openly 

 and singly, but I suppose in freedom would lay them 

 within a grass sheath. The egg is large, nearly 

 globular with flattened base, some examples a little 

 depressed on top ; the shell is dull and finely granulated, 

 and covered all over with extremely faint blunt hexa- 

 gonal reticulation, with finer reticulation just on the 

 top ; colour dull white, afterwards tinged with yellow. 

 The young larva eats all the empty eggshell but the 

 base. I have no note of its size, but its skin is rather 

 puckered, the head large and smooth, stuck on like a 

 large flattish button ; the usual dots very small, set 

 with the very shortest bristles I ever noticed in a 

 young larva, giving the larva a very bare look ; the 

 colour is pale yellowish, the dots black, the head and 

 a narrow collar on the second segment are brilliant jet 

 black; no anal plate; the four bristles on the 13th 

 segment are somewhat longer than the rest. At the 

 end of three weeks the larva is about 12 mm. in 

 length, colour now dull green, head and a thin curved 

 collar shining black. At this time it spins together the 



