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cabbage. The present spring they have also been unusually scarce, 
though more abundant than last year. April 25 I found the sexes 
pairing on kale at Smyrna, and a few eggs already deposited. Several 
pairs were brought to the insectary. ‘The mating of the sexes takes 
place at frequent intervals, often for the larger part of a day, during 
the period of a month or more. One female, with which was placed 
a male from May 1 to June 1, deposited fifteen clusters of eggs in that 
time. Another female, which mated on April 29, and was then placed 
alone, deposited six clusters of eggs up to May 19. The young from 
egos laid May 1 became full grown June 19. 
The appearance of this insect in the spring seems to be somewhat 
irregular. At Camden, May 12, I found but one or two stray females 
on some kale next to where a patch of late cabbage was fairly alive 
with bugs last fall, and where the same cabbage had been stored all 
winter. At Milford none could be found until May 29, when one or 
two were found here and there on the cabbage grown up to stalks, 
where were one or two clusters of eggs. One of our largest cabbage 
growers tells me that a few years ago it was almost impossible to raise 
cabbage on account of this insect, but that for the last few years he 
has used kale as a trap crop with the best of success, having very little 
trouble in thus catching the old bugs, and as a result of this procedure 
and the careful hand picking of the few that stray to the cabbage, dur- 
ing the last two or three years he has been troubled but very little, 
while his neighbors’ cabbage has often been ruined. 
On March 21 I received partially grown lots of Gastrophilus equa 
through our veterinarian, Dr. H. P. Eves, which, it was thought, had 
caused the death of a horse. The bots were taken from the stomach, 
which was full of them and was badly ulcerated. Dr. Eves stated 
that here and there the stomach and intestines had clearly been perfo- 
rated by the bots, and the scars made by them were found throughout 
the length of the intestinal canal. A week later Dr. Eves sent me 
bots of G. nasalis, most of which were found in the esophagus of a 
horse. 
The rose-chafer (J/acrodactylus subspinosus) has been much less 
numerous than usual this year, as has the plum curculio ( Conotrachelus 
nenuphar). In fact, but few of our fruit growers have resorted to 
“bugging,” as they term hand picking and jarring. 
Apples are being iargely planted in Delaware, and the insects affect- 
ing them have been quite an annoyance, especially on young trees top 
worked by budding. 
Aphis mali Fab. attacks the buds as soon as they commence to swell 
in the spring and often seriously stunts their growth or kills them. 
The eggs of this species commenced hatching on April 15, and the last 
hatched about May 7. These became less numerous late in May and 
had nearly disappeared by the middle of June, being largely destroyed 
