CAMPTOGRAMMA FLUVIATA. 75 



though it is generally possible to trace the dorsal and 

 subdorsal lines faintly, whilst the row of dark dashes 

 above the spiracles show firm and distinct, being 

 apparently the last to change and disappear of all the 

 markings. 



In some broods occur varieties having the greenish- 

 grey ground colour, and the usual markings on the 

 front and hind segments, but with the first half of the 

 back of each diamond-bearing segment coloured soft 

 dull pink, so that from above the larva looks to be 

 banded with green and pink ; the diamonds pinkish- 

 white ; the belly greenish. 



There is another variety with a purplish bloom laid 

 over a dull green. 



Another has the greenish-grey ground, but with all 

 the markings, diamonds, and lines scarcely showing 

 except just at the folds, where the dusky lines that 

 form them turn red. 



Another has the ground on the back of a dull 

 pinkish-brown, all the lines showing light red at the 

 folds. 



Another again has the ground pale brown, the 

 diamonds bordered by darker brown tinged with 

 olive, the edgings of the subdorsal stripe distinct and 

 wavy, and bearing some small black dashes on its 

 under side at the end of each segment; the black 

 dashes above the spiracles very distinct; the spiracles 

 themselves black. 



As in the greenish varieties sometimes, so also with 

 the brown ones, there are individuals which show a 

 purplish bloom. 



In some of the paler greenish and ochreous 

 varieties, the back of the hinder segments bears, 

 instead of As, some pairs of indistinct freckled lines, 

 arranged almost in the form of stunted crosses. 



When full-fed, the larva retires into any cover it 

 can find at hand, and either just below the surface of 

 the soil or amongst moss or dried bits of its food, 

 constructs a perfect but thin and weak cocoon of silk, 



