102 



would give good results in controlling the peHt. 

 Th rips and red spider may both be controlled by one or 

 two applications of sulphur and lime applied dry, as a 



dust, and it. is likely that this would also have a useful 



effect in connexion with the flea beetle. These pests arc 

 more injurious in dry weather, and the ad vent of rains 

 will often cause great reduction in their numbers. 



THE RWBET potato weevil {Cylaa formicariu8, Pabr.). 



Coleoptera. 



This insect, which occurs in the southern United 



States, Jamaica and British (oiiana does not seem to 



be known at present in the Lesser Antilles, although it is 

 reported as having occurred formerly in Barbados. It is 

 widely distributed throughout the tropics of the world 



It attacks sweet potatoes ill a manner somewhat similar 



to the scarabee : but the appearance of the insect 

 is quite different, as will be seen by reference to the 

 illustration (Fig. 115). This insect is mentioned here in 



order that planters throughout the West, Indies may be 



able to identify the pest if it should appear. 



Fig. 115. Sweet potato weevil. 

 Larva / pupa ; and adult. Enlarged, {From V. S, Dept, Agric) 



