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EXPLANATION: DO, PLAT Bis. 
PAPA 
COSSUS CENTERENSIS. 
. Group of eggs as deposited, natural size. 
. Egg magnified 9 diameters. 
. Caterpillar from time of emerging to October 14—four months’ growth 
. Caterpillar of one year and four months’ growth. 
. Caterpillar of two years and four months’ growth. 
Mature caterpillar, three years old; ready to pupate. 
. Pupal cell. 
. Male pupa. 
. Female pupa. 
Male Cossus, unspread. 
Female Cossus. 
Female Cossus, showing ovipositor. 
IP ID eI IB, IIE. 
COSSULA MAGNIFICA. 
. Pupa case of Cossula magnifica, 
. Cossula magnifica. Male. 
Cossula magnifica. Female. 
. Cossus querciperda. Male. 
. Cossus querciperda. Female. 
. Cossus angrezi. Female. 
Pa AUB lala 
SILK FIBRES. 
Fibre of white Cevennes race. 
Fibre of Crozier’s black race. 
(Both figures magnified 240 diameters. ) 
(72) 
