-85- 
Sparteine has a narcotic action similar to that of coniine and, to 
some extent, of nicotine* Sparteine was tested both as sulfate and as 
base. The sulfate was not found materially toxic at a concentration 
equal to 1 percent of the base, but the base at this concentration gave 
100-percent control of the bean aphid. Sprays containing 0.35 and 0.2 
percent of pure cytisine killed 100 and 80 percent of bean aphids, 
respectively, and sprays containing 0*5 and 0.4 percent of crude cytisine 
killed 98 and 80 percent* Sprays containing 2*5 and 1.0 percent of 
crude- chloroform extract of broom seeds killed 100 and 40 percent.— 
Tatters field and coworkers (393 ). 
DALEA VULNERARIA var* BARBATA Oerst* Synonym: P arose la barbata (Oerst.) 
Rydb* 
Two constituents were isolated from this Florida plant, but they 
were nontoxic to insects.— Roark (342 ) • 
DERRIS. Synonym: Deguelia. 
Since several reviews on the use of Derris as an insecticide have 
been published (Roark 234 , 339 , and 340 ) , the reader is referred to them 
for digests of the literature on this group of plants. Little information 
is given here other than to name the species that have been tested for 
inseotioidal value. A more recent article by Roark (345 ) discusses the 
present status of rotenone and rotenoids as insecticides. 
DERRIS BENTHAM1 Thw. 
Inseotioidal investigations on this plant, which was reputed in 
Ceylon to be a fish poison, were begun in 1928. — Stockdale ( 375 , pp. 78-79) • 
DERRIS CHINENSIS Benth. 
This species has been found by test to have insecticidal vnlue.— 
Roark (334 , p. 2). 
DERRIS CUNEIFOLIA Benth* Synonym: Deguelia cuneifolia (Benth*) Taub* 
Derris cuneifolia was the only plant used in Hong Kong, China, as 
an insecticide* It was imported in small quantities from Singapore.— 
Roark ( 532 , p* 18)* 
DERRIS ELLIPTICA (Roxb.) Benth. East Indian fish poison* Derris* 
This was the first species of Derris to be tested for inseotioidal 
purposes, and it is the most important species cultivated and used in 
preparing commercial derris insecticides* 
To control the insects infesting the nutmeg planfc in 1848 it was 
necessary to wash the leaves with a decoction of tuba root.— Oxley 
(296, p. 661)* 
