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holes in the leaves of roselle, and spraying measures 
have frequently to be employed for its control. 
Pests of Maize, Ragi and Sorghum. 
The pests of these plants are very similar to those of 
padi. Probably the worst pest of maize is Heliothis 
obsoleta, Fb., the caterpillar of which feeds on the 
cobs, and is best controlled by hand-picking. 
Pests of African Oil-Palm and Sago Palm. 
Both these palms are susceptible to the attacks 
of some of the pests of coconuts. Rhynchophorus 
schack, Oliv., probably prefers the sago palm to the 
coconut. 
After the operation of frond-pruning of African 
Oil-palms, all wounds should be carefully treated 
with some disinfectant, otherwise conditions are set 
up which enable this weevil to lay eggs. 
Pests of Tobacco. 
The tobacco plant is attacked by several pests, of 
which probably the more important are the cater- 
pillars of Psara submarginalis , Swinh., (Pyralidae ) , 
and of Heliothis obsoleta, Fb., ( Noctuidae ). 
The caterpillars of the former moth may be found 
in large numbers rolling the leaves of the tobacco 
plant; and those of the latter, although feeding 
slightly on the larger leaves, confine their attention 
essentially to the young shoots. 
Hand-picking should be done but, in severe cases, 
spraying or dusting with lead arsenate should be 
adopted under supervision. 
