1880 .] 
123 
ver y subdued ochreous-yellow in angular forms on the back ; five days 
fatei it spins a quantity of silk, tying as it were the leaves loosely 
together, but firmly, for its safety while laid up for another moult, 
"which is accomplished after two or three more days, and then it has 
the characteristic party-coloured coat of dark velvety-brown and pale 
cream-colour, the tubercular process appearing on the fourth segment 
as two short black eminences ; it soon spins more silk threads, keeping 
the leaves partly together, and feeds well until once more laid up for 
moulting, and this takes place after about a week from the previous 
change of skin. 
Now the rosy-pink colour appears on the belly and ventral legs, 
and the yellow parts of the back have a thin brown dorsal and fine 
lateral lines, the yellow being much brighter than before ; three 
distinct shapes of yellow are seen on the back, well defined, and con- 
trasted by the rich dark brown surrounding them, viz., a brilliant pale 
yellow triangular mark, its base at the beginning of the fifth segment 
its apex at the beginning of the sixth : an elongated diamond-mark of 
deeper yellow extends from near the beginning of the seventh segment 
to near the end of the ninth ; another begins on the front of the tenth 
and includes the pointed tail, relieved on the twelfth segment with a 
brown chevron : as the larva grows, these yellow marks expand and 
become united into one long fluctuating shape along the back, as I 
have formerly described ; though I have since then had one variety 
retain the triangular mark isolated distinctly to the end of its larval 
existence ; and another with the yellow colour rather inclining to drab. 
Having referred to my former account of this species, wherein 
mention was made of two young larvas dying, rather than eat the lime 
supplied to them, and that yet only the year before a nearly mature 
larva had thriven on that food well enough, it is now needful to state 
that what seemed to me then so inexplicable, received afterwards an 
easy solution when Mr. Grigg sent me some lime gathered in the haunts 
of sicula, leaves whose smaller size, and qualities of texture and colour, 
were different from those the little larvae rejected ; it was a great 
satisfaction, then, on visiting the trees where, without thought of any 
particular species of lime, I had first gathered food for the adult larva, 
to find they were Tilia parvifolia, and that T. cur op am also grew at no 
great distance, to which, by a mischance, the next year at night my 
footsteps had been directed, an incident proving the importance of 
having the proper name, when allusion is made to trees or plants as 
food for larvje. 
Emsworth : October 10 thy 1880. 
