96 ACIDALIA RUSTICATA. 
of the larva, but in neither of the above-mentioned 
descriptions is there any mention made of the row of 
five dorsal markings which, in our specimens, were 
very conspicuous. 
The ground colour was a dingy brown, paler on the 
ninth segment, the dorsal and subdorsal lines paler 
than the ground; on each segment from the fifth to 
the ninth (both inclusive) is an oblong space paler than 
the ground, shaped somewhat lke an acorn, the tip of 
which is formed by a very pale spot behind; these 
acorns are partially enclosed (at the beginning and end 
of each segment, that is) by blackish marks hke Vs, 
only with the arms curved to suit the outline. ‘There 
are also some much shorter curved lateral marks 
crossing the segmental folds just below the subdorsal 
line; and there is a pale ochreous plate on the second 
segment. 
The great rugosity of the skin, and its curious short 
clubbed bristles, have been described before. (John 
Hellins, January 28th, 1867; H.M.M., April, 1867, 
III, 259.) 
The larva of this species rests in a bent position, 
its claspers attached to its food-plant, and its anterior 
extremity raised; the head is slightly narrower than 
the second segment, and is partially received therein ; 
it is divided, but not deeply, on the crown; it is 
beset with numerous linear fleshy processes, which 
have the appearance of elongated warts; the body 
gradually increases in width after the head ; itis much 
dilated on the sides, and has two indistinct ridges on 
the back; the incisions of the segments are well 
marked, and each segment is obviously divided into 
six sections by transverse furrows, besides the manifest 
skin-fold which intervenes between the segments ; the 
sections are composed of wart-like projections, which 
give a rough and scabrous appearance to the entire 
body ; in addition to which it is beset with many clavate 
processes, which might be compared to the glandular 
hairs frequently occurring in plants; the extremity of 
