LEPIDOPTERA. 
brown-tail moth. 1, Male ; 2, Female laying eggs ; 3, Larvae ; 4, Pupa ; 5, Antennae of male ; 6, W ing-scales ; 
7, gold-tail moth (Porthesici aurifiua) larvae ; 8, Separate plumose hairs ; 9, Segments of larvae. (5, 6, 8, 9, 
enlarged.) 
been particularly severe. In 1863 the moth appeared in countless thousands, 
driven up as a regular insect storm by the south wind. Within a few hours the 
moths spread over the whole country side, buildings were completely covered 
iog 
of this insect. Its wings, antennae, and the dark half of the thorax and abdomen 
on the left side are of the colouring and form peculiar to the male, while those 
on the right resemble the form peculiar to the female. The illustration on 
p. 108 illustrates the stages in the development of the black - arches moth, 
PALE TUSSOCK MOTH, W T ITH ITS CATERPILLAR AND PUPA (nat. size). 
which is not altogether abundant in England but much more commonly met 
with on the Continent. Indeed, so abundant is it at times that it causes 
great injury to forest trees. In Prussia, Lithuania, and Poland, the havoc has 
