Southern armyworm (Prodenia eridania (Cram.)).--Various instars were 
fed dusted or sprayed collard, pigweed, or Swiss chard (1). A few fumiga- 
tion tests were made. 
Southern beet webworm (Pachyzancla bipunctalis (F.))e—-Fourth or fifth 
instars were fed dusted or sprayed Swiss chard (Be 
Squash bug (Anasa tristis (DeG.)).--Nymphs were fed dusted pumpkin 
stems (1). 
Three-striped blister beetle (Epicauta lemniscata (F.)).--Adults were 
fed dusted or sprayed pigweed or Swiss chard (1). 
Results 
A compound was considered toxic to screw-worms if the minimum lethal 
concentration was not over 0.1 percent. In the codling moth tests, compounds 
giving less than 50 percent of wormy fruit were considered toxic. For all 
the other species a 75-percent kill was the criterion of toxicity. On this 
basis the following compounds were found to be toxic to one or more species 
of arthropods. Numbers preceding names are the same as index numbers in 
table 1 and are included to facilitate comparison of compounds. 
(2) p-bromo-N-ethylbenzenesulfonamide ---------- 10 species 
(3) p-bromo-N-propylbenzenesulfonamide --------- 10 
(1) p-bromobenzenesulfonamide --------—--------- 
(7) p-bromo-N,N-dimethylbenzenesulfonamide ----- 
(5) p-bromo-N-isobutylbenzenesulfonamide ------- 
(12) 4-bromo-2'-chlorobenzenesulfonanilide ------ 
(14) 4-bromo-4'-chlorobenzenesulfonanilide ------ 
(17) 4-bromobenzenesulfonanisidide --~—--------- = 
(20) p-bromophenylsulfonylmorpholine -----—---- — 
(4) p-bromo-N-butylbenzenesulfonamide ------—-— 
PR HPWWuIo 
Test results for these compounds are shown in table 2 with the following 
exceptions. None of the compounds tested met the criteria for toxicity to 
the Mexican bean beetle, house fly, or squash bug; these insects therefore 
are not listed in the table. Furthermore, a few insect species were 
subjected to tests with only one or two compounds. The results of these 
tests are given below: 
Cabbage looper.--Compound No. 3 at 8 1b./100 gal. gave 100-percent kill 
after 6 days; No. 12 at 140 ng./sq. cm. gave 44-percent kill after 3 days. 
Imported cabbage worm.--Compound No. 3 at 8 1b./100 gal. gave 100- 
percent kill. 
Large milkweed bug.-=No. 7 at 230 ng./sq. cm. gave 17-percent kill, and 
No. 14 at 355 nge/Sqe cme gave 4-percent kill. 
Pseudoplusia looper.--No. 14 at 420 ng./sqe cme gave 72-percent kill, 
and No. 12 at 8 1b./100 gal. gave 70-percent kill. 
Se Ne 
