LYMANTRIA AMPLA. 79 
which pupated in stage 2) there were traces of post-medial 
and marginal dark lines. The body is small, slender, of a 
uniform brown. Antenne plumose. 
Imago : Female——The female imago possesses only rudi- 
mentary white scale-like wings, which are functionless. The 
body is dark gray-black, pubescent. On emergence from the 
pupa the body length is 30 mm., being enormously distended 
with eggs, but as these are laid the length shrinks to only 
10mm. The legs are somewhat long, and enable the female 
to crawl a few inches from the pupa. Antenne serrate. 
Life Cycle—Kgg 11-12 days. Male: larva 27-32 days. 
Pupa 10-12 days. Total 48-56 days. Female: larva more 
than 55 days. Pupa 6-9 days. The total female life cycle 
thus occupies probably quite a month longer than that of the 
male. As the moths have no means of feeding, it is difficult 
to understand how the male moth exists until the female has 
emerged. 
Oviposition—On emergence from the pupa the female 
imago usually crawls a few inches and awaits the advent of 
the male. The female apparently produces a scent (though 
this is not noticeable to man), which reaches its strongest on 
the fourth day of imaginal life, when males are attracted 
in considerable numbers from some distance. In one case a 
female confined under a glass bowl from the time of emergence 
attracted five males into the laboratory from cacao quite 
75 yards distant. The windows were shut at the time, but 
the males at length managed to gain entrance through a 
fanlight only some two feet square. The male is apparently 
‘dependent entirely on his scent organs to find the female, 
as on another occasion, when a male had entered the room 
and was fluttering round the table on which the female was 
confined in a glass, the latter was removed from the glass, 
the disturbance of the air in which apparently sent a wave 
of scent upwards, to which the male immediately flew, 
settling at the bottom of the glass, now empty, and ignoring 
the female herself, placed on the table within a few inches 
of him. He even had to pass her to enter the glass. The 
visits of the males to females in confinement always 
appear to take place abott noon, and the males fly in the 
