276 THE ENTOMOLOGIST. 
spread, causes damage” should read “ distribution confirmed by 
the author.” The above regretable misprints occurred owing 
to my absence from England during the time the paper was in 
the hands of the printer. 
During the past year (1915) several further observations have 
been made. This year the damage in this district (Surrey) was 
more severe than ever before noticed. The first specimens were 
found on May 26th, and from that date they increased in numbers 
rapidly until by June 9th they were in countless numbers in the 
terminal clusters of unopened leaves and flowers. The opening 
of the flowers being later this year, the attack resembled more 
closely that described by Trybom in Sweden. MHalf-a-dozen 
terminal clusters gave about 150 adult thrips. On the following 
day (June 10th) one first stage larva was found, while eggs were 
in profusion on the terminal clusters and in the stamen sheaths 
of the flowers. By June 25th first and second stage larve were 
abundant in all the flowers and on the pods, and by July 5th, 
when nearly all the larve were large, over 60 per cent. of all the 
pods were more or less severely damaged by them. In nearly 
all cases the pods nearest the base of the plants, that is the 
earlier ones, were almost undamaged, while those near the top 
were so severely attacked that in many cases the flower dried up 
without setting any pod, while those pods which did start were 
small, deformed, and contained no seed at all. Most of the larvee 
were feeding quite openly on the pods, only a few being hidden by 
the remains of the flower, and specimens examined during the 
night were found to be as active then as during the day-time. 
At this stage it would be possible to kill a large percentage by 
spraying. On July 7th there was an extremely heavy, almost 
tropical rainstorm, yet immediately after it quite a large number 
of larve were still feeding openly on the pods, chiefly on the 
lower surfaces. In the first fortnight in July nearly all the larvae 
descended, but a few fed ones were found on till the end of July. 
Careful observations were made on larve in earth in closed 
cages to see if any small proportion would emerge as a second 
brood, but out of many hundred larve not one emerged during 
the autumn. 
The occurrence and early disappearance of the males is 
further illustrated by the following collections : 
June 10th =. DUT eee : 73 3S 
gg LOE, ee 105 2 g ‘ ISS 
», 25th : 146 2 ? TSS 
July 2nd : 144 2 9 : OSS 
On various dates during June several specimens of a Chalcid, 
Pirene scylax, Walker, were found closely associated with the Pea 
Thrips both at Merton and at Cobham, Surrey, and also at 
Hever, Kent, but it was not possible to prove any direct connec- 
tion between them. 
