TRIFIDvE. 247 



verse stripe beyond the luuule; hind margin dotted with 

 black. Hind wings as on the upper side, but with a black 

 central spot. Body whitey-brown ; legs white, barred with 

 black. 



Not usually very variable. A specimen in Dr. F. D. 

 Wheeler's collection is remarkably large and of a most 

 curious leaden grey. As a rule, however, the dark suffused 

 variation so common in the next species is not produced in 

 this. Freshly reared specimens often have almost a pinkish 

 hue, which usually fades, leaving merely the warm yellowish 

 under-shade, but some of the specimens reared by Dr. 

 Chapman are permanently and most exquisitely tinged all 

 over the fore wings with a strong and decided pink flush, 

 which, so far, is permanent ; while others reared by him are 

 suffused with equally delicate pinkish-yellow or yellowish ; 

 and some are pale slate-grey, or dusted with darker grey. 



On the wing in June. Specimens reared from the egg 

 sometimes emerge in September. This Dr. Chapman has 

 once found to be the case with one-half a brood. No such 

 second emergence seems to occur with us out of doors. 



Larva rather hairy, moderately cylindrical, with the 

 incisions rather deeply indicated ; a large black tubercle on 

 the back of the fifth segment, and a broader hump on the 

 twelfth, somewhat flatly pyramidal, white, with large black 

 spots or irregular markings. Ground colour of the body 

 black, with a very broad orange-coloured dorsal stripe inter- 

 rupted with whitish ; subdorsal stripes also broad, orange- 

 red interrupted with black; two white dots on the black 

 portion of each segment, from the fifth to the twelfth ; 

 spiracular stripe pinkish-grey, bright pink, or orange-red on 

 the third and fourth segments and round the hinder part of 

 the thirteenth ; under surface and legs pale grey ; head black. 

 It may at once be discriminated from the following species 

 by its short stout tubercle on the fifth segment, the orange 

 dorsal colouring and the breadth and beauty of the sub- 



