47 
tinge, and is indistinctly marked, tlie pale lateral line not being 
conspicuous, while the yellowish subdorsal, except in one single 
specimen, was wanting ; autumnata also appeared much more shiny 
when full-grown in this skin. The dark parts on the other hand— 
the head, prothoracic and anal plates, and small dark markings on 
the anal claspers—entirely agree with jiliyrammaria, being the same 
shade of brown in both. 
The time length of the second stadium varies from four to seven 
days, according to temperature. 
In the third instar, the larva is at first golden yellow, but when 
the skin hardens it assumes some shade of green. At this stage I 
noted it as somewhat variable in colour, more so than jiliyrammaria: 
individual examples were perplexingly like the last named, but on the 
average the autumnata were rather duller green; the pale subdorsal 
and supraspiracular lines, and the yellowish lateral stripe were now 
well discernible, yet on the whole hardly so strongly expressed as in 
liliyrammaria. I made no direct comparison in this instar with 
>lilutata , being content with the general statement that it would be 
impossible to confound the two species. Of course, the differences 
between them are mainly the same as beeween <lilutata and jiliyram¬ 
maria, namely, that the former is practically unicolorous, generally of 
a bright apple-green, yellowish at the segment incisions, and with an 
indistinctly yellowish lateral line, and with the addition in a fair 
percentage of specimens of a purple dorsal line, of which there is no 
trace in its allies ; moreover, <lilutata appears somewhat more plump, 
and presents altogether a very different aspect, and its head, though 
lightish brown, is not without some tinge of green, and never such a 
dark brown as that of autumnata and Jiliyrammaria. 
The duration of the third stadium was, in all the observed cases, 
only four or five days. 
In the fourth instar, autumnata continues to be somewhat variable, 
some sharply marked examples being hardly distinguishable from 
jiliyrammaria, but the bulk being of a duller green, decidedly less 
sharply marked, the lateral line less yellow, though not absolutely 
white, as in so many <lilutata larva? of this age ; the subdorsal line 
also less yellow, and narrower than in Jiliyrammaria. I again noticed, 
as in the third instar, the entire difference of aspect between those two 
forms and (lilutata ; these differences being mainly of the same 
character as there noted, I need not recapitulate them. 
The time occupied in the fourth instar seemed to vary much, 
namely from four to nine days; to which must be added two to three 
days required for the final moult ; I think none of the preceding 
moults occupied more than a day. 
In the fifth (final) instar, I made several interesting observations 
and comparisons. In its earlier days, many of the larva? were of a 
bright goldy-green colour, which very occasionally appeared as a 
variety in filiy ram maria: the rest were of a rather bright apple green, 
and none showed the dark and rich greens which are so frequent in 
jiliyrammaria : the yellow subdorsal line was narrower, the lateral 
stripe paler yellow, and not strikingly conspicuous, the band of dorsal 
colour beneath it, inclined to shade off gradually to the ventral 
colouring ; the head was in almost all cases green, very rarely indeed 
with the lobes of the face brownish tinged, while a very good proportion 
