96 



the habit of jumping that the common name is derived 

 The larvae and adults feed on the leaves, puncturing them 

 with numerous minute holes. 



In some localities tobacco is seriously affected by 

 attacks of this insect, which by its feeding ruins the 

 leaf, as far as its use for cigar -making is concerned. 

 Spraying with Bordeaux mixture is sometimes very useful 

 in controlling attacks of the tiea beetle. It might happen, 

 however, that the fine hairs on the surface of the leaf 

 would hold the solid ingredients of the Bordeaux mixture 

 to such an extent as to impair the value of the leaf if the 

 application was made only shortly before the time of reap- 

 ing. Lead arsenate is also useful in this connexion. 



SWEET POTATOES. 



THE SCARABEE OR JACOBS (Cryptorhynchus bataiae, 

 Waterhouse). Coleoptera. 



In the West Indies 

 a small snout beetle and 

 its grub often cause very 

 serious loss to the grow- 

 ers of sweet potatoes. 

 This insect (Fig. 106) is 

 commonly known in 

 Barbados as the Scara- 

 bee, and in the Northern 

 Islands as Jacobs. The 

 entire life of the scarabee is passed on or in the potato. 

 The grub (Fig. 107) is small, whitish and without distinct 

 legs, somewhat resembling a maggot, which tunnels 



Fig. 106. Scarabee or Jacobs. 



Adult insect. Enlarged. 

 (Imperial Dept. Agric.} 



Fig. 107. Scarabee or Jacobs. 

 Larva. Enlarged. (Imperial Dept. Ayric.) 



