24 
badly infested with cutworms the poisoned bran should be drilled 
along in various parts of the bed where it will be readily accessible 
to them. The bran-arsenic mash produces the best results when it 
is used as we have recommended for the poisoned-vegetation trap 
to rid the land of cutworms before the tobacco plants are transferred 
from seed bed to field. In this case the land is prepared before- 
hand, and a little of the mash is dropped in the drill near the place 
where the plant will be set. Prof. W. G. Johnson recommends that 
this should be done from 
three to five days before the 
plants are set out. 
A number of different spe- 
cies of cutworms may be 
concerned in this damage, 
and some of the character- 
istic forms which have ae- 
tually been found in the to- 
bacco field are illustrated in 
figs. 16, 17, and 18. 
OTHER TOBACCO LEAF- 
FEEDERS. 
Several insects of less 
economic importance than 
My (FR those which we have already 
Fic. 19.—The cabbage Plusia: a, moth; b, full-grown mentioned are occasionally 
Ne a pupa, with its cocoon—natural size foynd feeding upon the 
leaves of the plant. 
The so-called cabbage Plusia (Plusia brassice Riley).—This insect 
(fig. 19), which occurs in most parts of the United States and has a 
number of different food plants, has been found in tobacco fields in 
Maryland, feeding upon the leaves, by Mr. F. C. Pratt, of the Divi- 
sion of Entomology, although not in sufficient numbers to give ita 
high rank as a tobacco insect. It is one of the species which is 
readily destroyed by the arsenical spray. 
Mamestra legitima Grote.—This insect (fig. 20), which is allied to the 
cutworms, feeds exposed upon the foliage of different plants. Its larva 
is a very handsome caterpillar, bright yellow in color, with velvety- 
black longitudinal lines. It has never been recorded as a tobacco 
insect, but was found rather abundantly by the writer in tobacco fields 
in southern Virginia upon the leaves, which, in some cases, were badly 
ragged. This insect canalso be easily destroyed by the arsenical spray. 
The tobacco thrips (7'hrips tabaci Lindeman).—This minute insect, 

which sometimes does considerable damage to onions and which has 
been popularly known in this country as the ‘‘onion thrips,” was 
originally described, in 1888, by Professor Lindeman, of Russia, as an 



