1 82 Second Repoj^t on Economic Zoology. 



The Cabbage Root Fly is very general in Great Britain. 



The centipedes were Gcophilus sitbterraneus. 



Another correspondent sent yoimg cabbage plants badly attacked 

 by maggot from Mellion, Cornwall. These plants arrived on the 

 15th of August, and I found larva of all sizes and pupae in them. 

 The flies commenced to hatch out on the 25th of August. 



Locusts {Acridinm. mjyptmm, Linn.) in Caulifowers feom 

 Italy. — The insect forwarded to the Board by Mr. John W. Gunn, 

 found in a cauliflower from Italy, is a common antl destructive 

 Locust — Acridium mgyptium, Linn. 



This pest is frequently imported into this country. It has been 

 taken flying in England on several occasions. 



Another species, Locusta danica, Z., now and then occurs, having 

 actually migrated from the Continent, but never in large numbers. 



There appear to be a considerable number of locusts being now 

 imported in foreign vegetables to this country. 



Prevalence of Loxg-horned Locusts at Herne Bay. — Locusts 

 were sent by Mr. W. H. Eldridge from Herne Bay ; they were the 

 well-known British species Locusta viridissima, Linn. It can be told 

 from all other British Locustidse by its large size. It occurs in 

 many places around the South Coast, especially, it seems, in parts 

 of Kent. It extends down to Laud'.s End, wliere it appeared in large 

 numbers in 1889. It has seemingly been very abundant this year. 



Its distribution is veiy wide, occurring in North Africa, Asia 

 Minor, and in the Amur district, ns well as all over Europe. 



Tromhidium holosericeum IN Gardens. — Some specimens sent by 

 a correspondent from Charmouth, Dorset, os American Blight or 

 Woolly Aphis were Acari or Mites known ns Tromhidium holo- 

 scriceum., sometimes called Bed Harvest Mites. As far as personal 

 observations go I should say they are quite harmless, and probably 

 do some good by feeding upon small insects and also, it seems, 

 decaying animal matter. They frequently swarm in tlie spring and 

 early summer along the rows of young peas nnd do tliem no harm. 

 (Numbers of this Acarus arc sent every year. ) 



A Remedy fop Aphides. -A correspondent of the Board writes 

 that "the vapour of bisulphide of carbon liquid used in the bee- 

 keeper's ' smoker " is a very good remedy for green fly, and does not 

 injure the most delicate flowers." 



