1 82 Second Report on Economic Zoology. 
The Cabbage Root Fly is very general in Great Britain. 
The centipedes were Geophilus subterraneus. 
Another correspondent sent young 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 ( Acridium segyptium , Linn.) in Caulifowers from 
Italy. — The insect forwarded to the Board by Mr. John W. Gunn, 
found in a cauliflower from Italy, is a common and destructive 
Locust — Acridium segyptium , Linn. 
This pest is frequently imported into this country. It has been 
taken flying in England on several occasions. 
Another species, Locusta dccnica, 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 Long-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 Land’s End, where it appeared in large 
numbers in 1889. It has seemingly been very abundant this year. 
Its distribution is very wide, occurring in North Africa, Asia 
Minor, and in the Amur district, as well as all over Europe. 
Trombidium holosericeum in Gardens. — Some specimens sent by 
a correspondent from Charmouth, Dorset, as American Blight or 
Woolly Aphis were Acari or Mites known as Trombidium holo- 
sericeum , sometimes called Red 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 the spring and 
early summer along the rows of young peas and do them no harm. 
(Numbers of this Acarus are sent every year.) 
A Remedy for 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.” 
