67 



cabbage. The present spring- they have also been unusually soarce, 

 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 inseetary. 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 

 eggs 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 cal)bage was fairly alive 

 with bugs last fall, and where the same ca))bage 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 GastrupluJu^i equi 

 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 b}^ them were found throughout 

 the length of the intestinal canal. A week later Dr. Eves sent me 

 bots of G. nascdis^ most of which were found in the esophagus of a 

 horse. 



The rose-chafer {Jfacrodacti/lt/.^ .<:uh.spuiosu!<) 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 largely planted in Delaware, and the insects atfect- 

 ing them have been quite an anno^yance, especially on young trees top 

 worked by budding. 



ApJiix mall Fab. attacks the ])uds as soon as tlu\v commence to swell 

 in the spring and often seriously .stunts theii- growth or kills them. 

 The eggs of this species conuuenced hatching on April 15. and the last 

 hatched about j\Iay 7. Tliese became less mnuerous late in May and 

 had nearly disappeared by the middle of June, being largely destroyed 



