24 LITHOSIA GRISEOLA. 



attacked vigorously some slices of turnip, but after- 

 wards, on attaining some size, they fed away steadily 

 on Lichen caninus, which I have since learnt had been 

 noticed to occur where the moth is most abundant, 

 and no doubt forms part of the natural food of the 

 larva. When full grown the length is quite an inch, 

 the figure stout and uniform ; the head small ; all the 

 tubercles tufted with stiff hairs, which are short on 

 the back and longer on the sides, with a few of extra 

 length on the second and thirteenth segments. 



The colour is a rich velvety blackish tint above, 

 dingy blackish-brown below ; the central portion of 

 the back can, however, be distinguished as a stripe of 

 more intense black than the rest ; there is a subdorsal 

 orange-ochreous stripe, which being interrupted by 

 the tubercles appears on segments 4 to 12 as a row of 

 wedge-shaped marks ; but on the second segment 

 there is no interruption, and on the third the whole 

 dorsal area is occupied by a large orange patch, 

 bisected for a part of its length by the deep black 

 dorsal line ; and on the thirteenth the subdorsal 

 wedges are replaced by two large squarish marks ; 

 the hairs are dark brown ; the head a most brilliant 

 black. 



Some of the larvse had the orange marks very faint 

 indeed, and two of them had no orange marks at all 

 except on segments 2, 3, and 13, thus presenting a 

 good variety. 



The pupa short, stout, reddish-brown in colour, the 

 anal segments still enveloped in the cast larva skin (I 

 notice this to be the case with the other species also), 

 enclosed in a thin web, in which bits of moss and 

 lichen were sometimes interwoven, and placed under 

 any protecting cover, such as a stone. 



The moths I bred were very fine, much larger than 

 any I ever captured, and although varying somewhat 

 among themselves in the depth of their grey tints, yet 

 none of them were at all like stramineola. (J. H., 5, 

 9, 68; E.M.M. V, 110.) 



