STIGMONO TID.^—DICHRORAMPHA. 253 



Antennge black-brown ; palpi whitish grey ; head and 

 thorax yellow brown ; abdomen dull brown. Fore wings 

 rather broad, costa folded at the base and flatly arched^ 

 apex bluntly angulated, hind margin rather squared; dark 

 brown thickly dusted with golden yellow atoms, especially 

 so toward the apex ; dorsal blotch broad, very little curved 

 back, orange-yellow, its edges well defined and not carried 

 along the margin ; costal dots inconspicuous, yellow, from 

 them golden yellow fine lines proceed towards the hind 

 margin, which also is preceded by three black dots; cilia 

 smoky brown. Hind wings smoky brown with dull white 

 cilia. Female similar, rather larger without the costal fold. 



Undersides of all the wings shining leaden black. 



On the wing in July and August. 



Larva very sluggish, cylindrical, but with the segments 

 slightly swollen ; shining pale yellow, with a broad, dark 

 purple, internal dorsal vessel, visible through the whole 

 length of the body ; raised dots small, blackish, without 

 hairs ; head bright chestnut ; jaws brown ; dorsal plate pale 

 yellowish brown ; anal plate blackish. September and 

 through the winter till June in the root stocks of tansy 

 [Tanacetum mdgare) and at the base of the old stems, 

 eating out the pith and gnawing the substance of the thick 

 root-stock ; assuming the j)upa state in the larval-burrow. 

 Mr. South states that he has reared it from Chrysanthemum 

 leucanthevium, and Matricaria inodora. 



The moth flies occasionally, of its own accord, in the after- 

 noon sunshine, but far more commonly about sunset. It 

 hides usually in tansj^ plants, from which it is easily disturbed, 

 though not by any means so lively on the wing as the last 

 two species. I once noticed it to be curiously attracted by 

 an old plant o^-wovxnvioodi (^Artemisia ahsinthi am) in a garden 

 where there was no tansy ; the apjaearance was as though 

 attracted by the scent, and a good many specimens were 



