-100- 
The alkaloids are intermediate between anabasine and lupine in 
inseotioidal power. d-Sparteine, contained in the vegetative parts 
of this speoies, is the most toxio alkaloid.— Sokolov and Koblova (372 ) . 
SOPHORA TOMHJTOSA L. 
Extracts of the seeds showed little toxio - ction to the bean aphid. 
Crude extracts of cyti sine-containing seeds H\ as these , with the 
possible exception of laburnum, are not likely to prove of practical 
importance* Cytisine itself, if it could be prepared oheaply, would 
be worth further consideration. Cytisine showed no aotion as a stomach 
poison against larvae of the moth Selenia tetralunaria Hufm.— 
Tattersf ield and ooworkers (393 ) • " 
SFATHOLOBUS ROXBURGH! I Benth. 
A sample of roots of this fish-poison plant from Burma oontained 
about 1 peroent of rotenone. An extraot was highly toxic to goldfish 
and larvae.— Jones (221 ) • 
STYLOSAKTHES BI FLORA (L.) B. 8. P. Pencil flower. 
Extracts from this plant were not repellent to the Japanese 
beetle.—Metiger and Grant ( 277 ) • 
TEPHROSIA. Synonym: Cracca . 
For a long time it has been known that Tephrosia possesses insecti- 
oidal properties, but a serious study of it was not undertaken prior to 
the work done in 1925 by Tattersf ield and coworkers ( 392 ) • Since that 
date it has been studied considerably and if it had not been for a joore 
lively interest in Derris and Lonchooarpus , Tephrosia might now "be one 
of our commercial insecticides instead of being still in the experimen- 
tal stage. However, progress with it has been handicapped by the fact 
that the roost promising speoies do not oontain so much toxic of the 
principles as do oe- ain speoies of Derris and Lonchocarpus . 
In 1987 the literature on Tephrosia as an insecticide was reviewed. 
Of 35 species listed IP «rere reported to have insecticidal value. — 
Roark (337). 
TEPHR08IA AMBIGUA M. A. Curtis. 
Extracts from the roots and seeds collected in North Carolina were 
slightly toxic to houseflies, but were not promising. — Jones and oo- 
workers (222). 
