:;:. 
- 586 - 
Nicotine dust will continue to be used in hop yards against the 
hop aphid (Ph orodon h amul i Shcr. ) , a$ a combination cast of ground sul- 
phur, hydrated lime and nicotine sulphate has been found most effective 
in destroying the red spider and this aphid at one operation. Nicotine^ 
dust has proved the only suitable control for the cabbage flea beetle 
( Phyllotreta a lbionica Lee.) and is being largely adopted in the lower 
Fraser valley r.s both practical and economical. 
H07IAED, N. P. (2453) 
1222. THE MEXICAN BEAN BEETLE IN THE SOUTH EASTERN U. S. Jour. Econ. 
Ent. 15: 265-275, illus. 
Nicotine dusts, contain from 1 to 10 percent of nicotine sul- 
phate by weight, gave no control (p. 273). 
BENLLOCH, M. (2460) 
1932. THE HALTICID OF BEET. Bol. Pat. Veg. Ent. Agr. 6 (1931), No. 
23-25, pp. 69-74, illus. [in Spanish. Abstract in Rev. Appl. 
Ent. (A) 21: 304. 1933.] 
Excellent results were obtained in experiments with a dust con- 
taining 3 percent nicotine. Dusting is preferable to spraying. 
6. Diptera, 1925-1933 
VAYSSIERE, P. (2461) 
1928. CECIDOMYIA OF GRAPES IN THE CHAMPAGNE REGION. Prog. Agr. Vitic. 
90: 205-207. [in French. Abstract in Biol. Abs. 5 (l): 180, Entry 
1844. 1931.] 
Dusting with nicotine or pyrethrum powder is suggested for Con- 
tarinia viticola Hubs. 
SMITH, K. M. (2462) 
1925. FURTHER EXPERIMENTS IN TEE CONTROL OF CERTAIN MAGGOTS ATTACKING 
THE ROOTS OF VEGETABLES. Ann. Appl. Biol. 12 (1): 77-92. [Abstract 
in Rev. Appl. Ent. (A) 13: 159-160. 1925.] 
A nicotine sulphate dust in a 5 percent mixture with precipitated 
chalk is the best substance against the onion fly ( Hylemyia ant i qua Meig.) 
and carrot fly ( Psil a ro sae F.). Against the cabbage root fly ( Phorbia 
brassicae Beh.) fairly good results were obtained with nicotine sulphate 
DOUCETTE, C. F. (2463) 
1925. THE CATTLEYA FLY ( ISO SOMA ) EURYTOMA ORCHIDEARUM TCESTV r 00D. Jour.Ecoa 
Ent. 18: 143-147. [Abstract in Rev. Appl. Ent. (A) 13: 249. 1925.] 
It is suggested that semi-weekly dusting for five months be made 
with the following dust: kaolin 80, hydrated lime 20, tobacco dust 
(nicotine = 1 percent) 25, 40-percent nicotine sulphate, 5 parts. 
