COLIAS HYALE. 19 



They grew slowly, dying off one by one, till the three 

 or four survivors were about one-third of an inch long, 

 at which size they hybernated, but never began to feed 

 again in the spring, and so perished in February and 

 March, 1869. Perhaps the right way would have been 

 to have kept them in a greenhouse, and fed them up 

 rapidly without hybernation. 



The egg is of a long fusiform shape, one end conical, 

 the other knobbed or like a bag tied round the neck ; 

 the shell delicate and glistening, ribbed longitudinally 

 and with very slight transverse reticulations ; the 

 colour, at first a pale straw, changing to rich apricot 

 or salmon colour, and lastly blackish. 



The newly hatched larva is of a very pale olive 

 freckled with brownish; head as wide as the body and 

 blackish ; on each segment a transverse row of clubbed 

 pellucid bristles. After a moult it becomes pale yel- 

 lowish-green, and after another a full green. And 

 from this time to their early and lamented death my 

 larvae remained as follows : 



Length about one-third of an inch, stout, cylindrical, 

 uniform in bulk, head narrower than the second seg- 

 ment. Colour a dull full green, head slightly tinged 

 with brown, a whitish spiracular line, the whole skin 

 covered closely with short black spines or bristles. 

 (J. H., 14, 12, 69 ; E.M.M. VI, 232.) 



PlEEIS ~RAVM. 



Plate II, fig. 3. 



A full-grown larva was found on a garden wall, Sep- 

 tember 17th, 1874. Its length was 1-^ inch, tapering 

 a little behind and a little in front, the head globular. 

 Its colour was a dull velvety, rather glaucous green on 

 the upper surface as far as the spiracles, thence becom- 

 ing rather paler. The dorsal line was of a deep, rather 

 orange yellow, ending on the twelfth segment, and there 



