STATE AGRICULTURAL SOCIETY. 
501 
STRIPED FLEA-BEETLE. LAKVA A LEAF MINER. 
an inch or more in diameter. But most of the holes are small 
perforations, scarcely large enough to admit a pin. These holes 
in the young mustard leaves are edged with white, forming a little 
ring of this color around the margin of the perforation, which is 
bordered on its outer side bj' a blackish ring. The holes are 
mostly circular, but some of them are oval or oblong. In the 
thick, succulent leaves of the cabbage, radish, &c., they merely 
nibble little pits which 'do not reach through the leaf. Some of 
these are in the upper and others in the under surface of the leaf, 
and these nibbled spots are of a pale grayish color, giving to the 
leaves a speckled appearance. 
A peculiar mark is frequently observed upon the leaves of tur¬ 
nips, beets and other plants in the garden. The first thought 
which is apt to strike the mind upon noticing this mark is, that a 
crinkled dead worm of some kind has been lying upon the leaf, 
and has in some waj' made 
there an exact print of its 
form. And if this mark is 
particularly inspected, it 
will be observed that it 
gradually increases in its 
thickness, through its sev¬ 
eral crooks and turns, from 
its commencement to its 
end. These marks are 
really produced by minute 
worms living in the inte¬ 
rior of the leaves, feeding; 
upon their green pulpy 
substance, and leaving the 
skin uubrokon — mining a 
serpentine track, which in¬ 
creases in thickness as the 
worm grows to a larger 
size. These worms are 
These worms are 
Rig. 0. Traoks made by tho larvco of flea-booties, termed leaf miners. It is 
the larvae of these flea-beetles which make most of these marks 
which occur in tho turnip and other leaves in the garden. The 
accompanying Fig. 6 represents a turnip leaf with two of these 
worm tracks in it, and also showing holes perforated by these Ilea- 
