- l.-^'a - 
CGEEECTIOIT 
E-60^. A REVIEW CE THE lUSECTICIDAl USES CF ROTEiTOi^E 
AMD ROTEiTOIDS FROM DERRIS, LOHCHO CARPUS (CU3E AIJD TIMBO), 
TEPHSOSIA, Al'D RELATED FLAIITS. PART YI : COLEOPTERA. 
The paragraphs that follov/ were accidentally omitted 
from the original edition of tho circular. This sheet 
shnuld be insertrd (as page l?a) between pages 18 and 19. 
Altica oleracea (L.), a flea beetle 
This pest on cauliflower vras killr-d by a product con- 
taining 12 pf-rcent of powdered Lonchocarpus nicou root (of 
6 percent rotenone contont) and 8S percent of talcum, accord- 
ing to Etablissemcnts Rotrnia in 19 '^S , in a letter to R. C. 
Roark. 
Altica pagana Blackburn, a metallic flea beetle 
Evans (llfi) in 1^3? reported that thp metallic flea 
beetl-- i» Tasmania can be contr«llrd by the aioplication of 
derris dusts, several brands of v;hich are now on the market. 
These dusts can be used right up to the time the fruit is 
picked, unlike lead arsenate, which can be used vrith safety 
on plants only prior to fruit development. Derris dust will 
not only kill the beetles and grubs on treated plants but will 
protect the plants for a p^^riod from further attack. 
