-56- 
cover crop was recommended because this plant was definitely un- 
attractive to the weevils and poisoned those that fed on it. It 
was found that this plant contains a toxic principle which is pre- 
sent in decreasing quantities in the seeds, stems, root-cortex, and 
leaves.— Fennah (179) j St. Lucia Department of Agriculture ( 518 ) . 
Listroderes obliquus Klug, the vegetable weevil 
A vegetable weevil, probably this species, attacks carrots 
in New Zealand. Derris as a dust or spray will be an efficient 
destroying agent.— Pritchard (476 ) ♦ 
Listronotus oregonensis (Lee), the carrot weevil 
Listronotus latiusculus (authors, not Boh.) 
Derris and pyrethrum were tried against this pest on celery in 
New Jersey but they were not promising.— Pepper and Hagroann ( 461 ) . 
Pantomorus godmani (Crotch), the Puller rose beetle 
A derris-talo dust containing 0.75 percent of rotenone killed 
only 26 percent of the weevils on a field of kale near Norfolk, 
Va.— Walker and Anderson (644 ). 
Rhynchites auratus Scop. 
Rhynchites aequatus (L.) # an apple fruit weevil 
Repeated applications of dust or liquid preparations of derris- 
pyrethrum were suitable in dry weather.— Thi em (586 ) • 
Rhynchites germanicus Hbst., a strawberry stem borer 
Outbreaks of this weevil on strawberry in Big land can be oheck- 
ed by a prompt application of a derris dust, but where an infesta- 
tion is severe a second application may be necessary. --Mas see ( 399 ) . 
Several proprietary dusts of derris were more effective in 
Germany than mixtures of derris and pyrethrum. In laboratory tests 
the percentage of mortalities given by dusts containing derris, nic- 
otine, and pyrethrum were respectively 100, 60, and 0.— Jancke (514 ) . 
Derris and derris-pyrethrum preparations applied as dusts gave 
best results in the upper Rhine district.— Hanf (257) . 
