-96- 
Comments by reviewer . — This is the most promising insecticidal 
plant discovered during the 1930* s. Although a rotenone-yi elding species, 
thus far it does not oompete favorably with the best samples of Derris. 
Work with it should be continued* 
NEORAUTANENIA FI SI FOLIA (Benth.) C. A. Sin* Synonym: Rhynohosia 
fislfolia Benth. 
This plant occurs in eastern South Afrioa, particularly in the 
Transvaal and Natal, and in southern Rhodesia* Alcoholic and aqueous 
extracts of the ground roots were toxic to the bean aphid, a 1-percent 
alooholio extract killing all the aphids sprayed.— Tattersfi eld and 
Gimingham ( 591 ). 
OSTRYODERRIS GABONICA Dunn. Boleraba. 
Alcoholic extracts of the roots, stems and leaves of this olimbing 
shrub from the Belgian Congo were tested against the bean aphid. Five- 
percent extracts of the stems and roots paralyted 100 percent of the 
aphids sprayed; a 2-peroent extract of the stems paralyted 70 percent, 
and of the roots, 90 percent; but the leaves were nontoxic. No part of 
this plant was comparable in insecticidal activity with Derris 
elliptlca .— Tatter sfield and coworkers. (394 ) . 
OUGEINIA DALBERGIOIDES Benth. 
Extracts of th« leaves and bark of this plant from India were non- 
toxic to the bean aphid.— Tattersfield and Gimingham (39l). 
This fish-poison plant is widely distributed in India. A 5-percent 
alooholio extract of the stem bark killed 75 percent of Plutella maculi- 
pennia (Curt.), 80 percent of Prodenia litura (F.) and Crooidolomia 
binotalls Zeller., and 100 percent of Euprootis fraterna (MooreT* A 
5-percent extract of the leaves killed 100 percent of the first, third, 
and fourth species, and 90 percent of the second species. The powdered 
stem bark dusted upon beetles (Callosobruohus shinensls (L.)) killed 
only 60 percent of then in 72 hours, but the powdered leaves killed 
100 peroent.—Puttarudriah and Subrananian (512 ) • 
PACHYRHIZUS ANGULATDS Rioh. 
Th« ground seeds had a slight effect on the caterpillars of 
Prodenia litura (F.) • — DeBusey (76) • 
PACHYRHIXUS EROSUS Urban. Yam bean. 
The portion of the bean most toxio to insects gives positive reactions 
for rotenone by the Gross-Smith and Durham tests.— Hwang ( 208 ) . 
