1871.} 115 
the colour is olive-brown, and the lines and dots pale yellow, namely, a dorsal stripe 
of uniform width, a sub-dorsal stripe rather broader, a fine, wavy line between this 
and a narrow sub-spiracular line, the tubercular dots arrranged in threes on either 
side the dorsal stripe. At the end of about six or seven weeks, the final moult 
occurs, when the larva is about an inch in length, and with this moult the ground- 
colour becomes olive-green, and there come some black markings, giving an effect 
very different from that of the former stages ; and I may observe that it was just 
at this time that the great mortality occurred, the larve, which hitherto had seemed 
to be doing well, now dying off one after another, 
When full-grown, the length is an inch and a half, the figure rather stout in 
proportion, and cylindrical, except that the head is a trifle narrower than the second 
segment, which, with the third, also tapers slightly forwards, and that the thirteenth 
is tapered to the end ; the head is full and rounded at the sides ; the tubercular dot 
furnished with very small, fine hairs ; the skin smooth and velvety. The ground- 
colour is olive-brown, with a slight trace of green in it, particularly on the back, the 
sides and belly rather paler, having somewhat of a pinkish tinge; the pale yellow 
dorsal stripe is interrupted by a deep, blackish, freckled patch of the ground-colour, 
just at the beginning of each segment, which, by its extension backwards on either 
side, forms the dark boundary of more than half of a blunt diamond-shape of blackish 
freckles, the area within showing the yellow dorsal stripe but faintly, this dark 
freckling, with a deeper suffusion of ground-colour, forms a bar across the back 
from the hinder tubercular yellow dot on one side to that on the other, the part 
behind remaining to complete this irregular diamond-shape is but faintly freckled, 
and there, at the end of the segment, the pale yellow dorsal stripe, shows bright 
and unclouded ; on all the segments, from the hinder tubercular dot, runs a thick 
black streak, a little downwards and forwards into the sub-dorsal pale yellow stripe, 
which it extinguishes at that part nearly up to the segmental division, or, in some 
instances, opens a little at one or at each end, so as to allow the yellow stripe to 
appear. The side, for about half way or more down, is rather paler than the back 
then comes a very fine, rather wavy, yellowish line, broken a little in character by 
black atoms that make its edges appear ragged; the thin sub-spiracular line is 
similar at a little distance below, the interval being a little deeper in colour than 
the side, and much freckled with deeper olive-brown; the belly and legs are rather 
paler and a little tinged with olive-pinkish, and bear some few freckles of yellow 
and olive, sprinkled just above the ventral legs, these last are tipped with pinkish- 
brown; the tubercular dots are all pale yellow, and distinct, and are delicately 
ringed with black, as are also the oval, dirty-whitish spiracles ; the head is olive- 
brown, freckled and reticulated with darker brown; the slightly more shining 
second segment is, on the back, adorned with two pairs of yellow dots. 
When the larva ceases to feed, its habit is to retire into moss, or, if it does not 
find this, it will fold up a leaf, or else fasten a leaf loosely to the surface of the soil, 
and there spin an oval cocoon, three-quarters of an inch long, of whitish sill, close, 
but semi-transparent, and closely adhering to the surrounding substances. 
The pupa has no striking peculiarity, being thick in proportion, a little over 
five-eighths of an inch long; the thorax, wing, leg, and antenne cases finely cor- 
rugated, and the abdominal segments rather smooth, terminating in a hooked 
