PYRAUSTA MACHGRALIS, 303 
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which it is retracted, and dentate on vein; a more or less 
prominent crenulate submarginal line. 
Hind wing with crenulate postmedial line bent outwards 
between veins 5 and 3, along which it is retracted ; both wings 
with marginal dark line and two lines through the cilia. Mr. 
Hole notes that in the large number of specimens examined 
by him in the Central Provinces he has been unable to trace 
the crenulate postmedial line between veins 5 and 3. 
The form suavalis-fuscicostalis has the marginal area of 
fore wing and of hind wing to vein 2 suffused with fuscous ; 
rubicundalis from the Khasis has all the markings pink. 
Expanse of wing @ 22, 2 24 millim. 
Fig. 72 in /nujurtous Insects shows the pupa and moth of 
this insect. 
Life History. 
This insect has a large number of generations, which may 
be as many as seven, in the year. The time usually required to 
pass through one complete generation in the Central Provinces 
has been found by Mr. Hole to be 30 days, as follows :— 
From appearance of moth to emergence of 
larvze from eggs laid by the former . eee days. 
Larval stage : : . : : ane; 
Pupal do. . : 4 “ “ P qe 
ToTAL emraO.F:; 
In the Central Provinces the moths make their first appears 
ance in the first week of April from the larve which hibernate 
through the winter. The larva from the eggs laid by these moths 
would therefore make their appearance upon the teak leaves 
about the beginning of the month, and the moths of the first com- 
pleted generation of the year at the end of the first week in May, 
allowing 16 days for the larval stage and 7 days for the pupal 
one as given above. This coincides with what is probably 
the first appearance of the insect in Burma, Colonel Bingham 
having collected larva towards the end of April from which 
the first moths were obtained on May 6th. Inthe Kanara Teak 
forests of Bombay also Mr. Bell states that the insect has 
about seven generations in the year, lasting from a month to 6 
