1871. ] 141 
line and spiracles the space was filled with a darker tint of the ground colour, form- 
ing a broad dark stripe. At this stage the character of umbrosa is very distinct 
from its congener, and remains so until the length of about five-eighths of an inch 
is attained; but the next moult introduces the design that at once recals the 
well-known wanthographa, and continues throughout their future larval career. 
There were three varieties of the general colouring in each of the three broods, 
some being yellowish, some brownish, and others of a greyish-brown, but in the de- 
tail of their markings they were all very constant. The individual from which the 
following description was drawn was one of the yellowish varieties. — 
The full-grown larva is from 14 to 13 inch in length, moderately stout and 
cylindrical, though tapering a little at the anterior segments, the head being smallest, 
the last segment also sloping down on the back from the twelfth, and tapering a 
little to the extremity. Viewed on the back, the colour of the head is pale brownish, 
freckled with darker brown, and streaked with brown on the front of each lobe, and 
very shining; the skin generally smooth and rather velvety on the rest of the body, 
thongh a little shining on the back of the second segment; the dorsal line is very 
pale whitish-ochreous, e?ged with a dark brown line on each side; it is not quite a 
simple line, but commencing broad on the front of each segment, soon narrows, ex- 
pands again just at the middle, again contracts, and widens again at the end; the 
sub-dorsal line is of uniform thickness throughout its course, and is also of the same 
whitish-ochreous tint, edged on its lower side with a fine, dark brown line, and on 
its upper-side by a wider brown stripe, bearing a black dash, sometimes rather of 
a wedge shape, on the anterior half of each segment ; the ground-colour of the back 
between the lines is ochroous or brownish, marked with fine, longitudinal, dark 
brown, wavy streaks, which are variously disposed in their aggregation, sometimes 
suffusing the ground-colour in a narrow diamond form; in other examples more 
suffused behind, but generally these streaks give more depth of colouring at the an- 
terior part of each segment ; the front pairs of tubercular dots are black, and they 
often send forward a fine black streak; the hinder pairs are also black, but, from 
standing within the before-mentioned black dashes, are invisible; the twelfth seg- 
ment has the sub-dorsal lines slanting inwards for two-thirds of its length, where 
the last pair of the black dashes end abruptly, as do also the suffused, wavy streaks, 
and from that part the sub-dorsal lines bend outwards, and resume their former 
course, approximating towards the end of the dorsal line at the anal extremity ; the 
colouring of the side as far downas the spiracles consists of two longitudinal, broad 
bands or stripes of equal width throughout, the upper being pale ochreous (some- 
times bearing a few brown scattered freckles), the lower dark brown, containing a 
slanting dash of still darker brown made up of atoms; on the lower edge of this 
come the spiracles, which are not very conspicuous, being small dirty whitish, out- 
lined faintly with black. The sub-spiracular stripe is of pale, unfreckled ochreous, 
and is attenuated a little at each end; the belly and legs are of a very slightly 
deeper tint of the same, and there are some minute tubercular dots and freckles of 
dark brown above and upun the legs, which are tipped with dark brown. 
The pupa is about half-an-inch in length, moderately stout and smooth, with 
no striking peculiarity of form, dark brown in colour and rather shining.—Wwm. 
Buckiek, Emsworth, September, 1871. 
