44 LEPIDOPTERA. 



with an indistinctly paler dorsal line, sometimes broad and 

 cloudy, at others narrow and partially' interrupted. Body, 

 below the spiracles, dull pinkish tinged with smoky. On the 

 front portion of each segment of the body is a large, round, 

 pale yellow, subdorsal spot, ringed with black which shades 

 off outwardly. Sometimes these spots are ovate, and that at 

 the base of the horn is always elongated. Horn pinkish red, 

 spiracles ringed with blackish ; legs black ; prolegs dark red. 

 In markings this larva is rather constant, but there is much 

 diversity in the ground colour. One striking and not very 

 rare variety has the colour of a black-olive, even the spots 

 being small and dull in colour ; and of this form a modifica- 

 tion takes place, where the blackish ground colour is broken 

 by close lines of minute yellowish or olive-green dots, or 

 where the general colour is bluish black. In these the round 

 spots, the head, and the legs are often dark or suffused with 

 darker shades. 



The young larva is quite different, being of a bright full 

 green, with dorsal, subdorsal, and subspiracular lines pale 

 ochreous yellow. As it grows spots begin to appear on the 

 subdorsal line, and at the last moult — which occurs when the 

 larva is still not half of its ultimate size — the subdorsal line 

 disapjoears, and the spots become bright and conspicuous. 



August and September, on Galium vcrwiii and G. mollwjo. 

 Said also to have been found on Fuchsia and on Epilohium 

 ancjustifolium, and will eat Galium aparine, though not always 

 with satisfactory results. Usually met with, however, upon 

 Galium xcrum (ladies' yellow bedstraw), on seaside sandhills 

 or hillsides on the chalk. Extremely sensitive to cold, 

 retiring to the roots of the plant, or even burying itself in 

 the sand, when the temperature falls, and should the fall be 

 considerable the effect seems usually to be fatal. But in 

 warm weather it loves to sun itself on the sand or on its food- 

 plants, feeding in the evening and at night when warm. 



Pupa thin-skinned and delicate, regularly rounded, except 



