762 REPORT OF THE ENTOMOLOGIST OF THE 
THE SOUTHERN CABBAGE BUTTERFLY. 
(Pieris protidice, Bp.) 
This is the native cabbage butterfly. Its habits are similar to 
the imported cabbage butterfly. The butterflies have more black 
marks on the wings than the imported species. No specimens of 
this pest were noted the past fall on Long Island. The three 
last-named insects should be treated with the same remedies as 
the imported cabbage butterfly. 
II. NOTES ON THE STALK BORER. 
(Gortyna nitela, GUENEE.) 
During the fall numerous complaints were received with regard 
to the injury caused to corn by the “Stalk Borer.” As it is its 
nature to bore into the stalk it is a difficult matter to apply effi- 
cient remedies. It hibernates in the moth stage. 
One field of corn was observed which had the first three or 
four rows riddled by this pest. These rows were alongside a 
fence that has been allowed to grow up to weeds and underbrush. 
Burning such neglected corners where possible, late in the fall, 
or early in the spring would destroy quite a number of adult 
insects which seek such places to pass the winter. 
Ill. INSECTICIDES. 
Throughout this report reference is made to the use of differ- 
ent remedies without giving in all cases explicit formule for 
making the same. Tor convenience the formule of the principal 
. insecticides are grouped together. It should be remembered that 
these insecticides are not controlled by letters patent. Patent 
insecticides are fast reaching the level of patent medicine. Each 
is warranted to kill all insects and plant diseases. A few contain 
the principal ingredients of the unpatented insecticides in small 
quantities. 
Insecticides are of two kinds or classes — first, those which kill 
by poisoning, and second, those which kill by contact, killing 
either by irritation or by smothering. It is necessary that the _ 
