TRIFID.rE. 273 



brown ; cilia white. Female hardly smaller, fore wings very 

 slightly narrower; body but little stouter; in all respects 

 very similar. 



Underside of the fore wings white with a smoky dappling 

 toward the apex, and the discal cell and nervures tinged with 

 the same colour ; hind \viugs pearly-white, dusted along the 

 costal margin with brown. Body and legs whitish-brown ; 

 tibiffi barred with black-brown. 



Apparently but little variable ; Dr. Mason possesses a 

 beautiful specimen of unusual size ; dark grey to the second 

 line, stigmata very distinct, and the orbicular quite light 

 yellow. In the collection of Mr. F. C. Woodforde is one in 

 which the subterminal line is spread broadly into an obscure 

 whitish rippled band. In its wide range abroad it sometimes 

 almost loses the yellow orbicular stigma, but otherwise is 

 tolerably constant. 



On the wing in September and October, and after hyber- 

 nation from March till June, or even sometimes till Julv or 

 August. Thus, rare as it is, there is evidence of its existence 

 in the imago state almost throughout the year, though, so far 

 as is at present known, in but one generation. 



Larva, " Pinkish-brown on the back ; pinkish-yellow under- 

 neath ; a row of black spots down the back ; two rows down 

 each side, between which are white spiracles on rather darker 

 ground than that outside the rows of black spots; head and 

 tail of a greenish hue ; length when full grown one inch."' 

 (A. "Wallace.) The eggs in this case were laid by a specimen 

 taken in July, they hatched in three weeks ; the larvte were 

 full-grown by the middle of September, and the moths 

 emerged in October. 



August and September on plantain and other low-growing 

 plants. 



Plpa imdescribed, in the earth. 



The moth is usually very rare in this country ; probably 

 more were taken in the South of Devon in the autumns 

 VOL. V. < 



