J. E. M. Mellok 07 



day one was found, and in the latter situation, resting hieli up on tlic 

 wall of a top-floor room and only moving- on compulsion, December 9th. 



(B) M. dnmestica was only found near horse manure except on two 

 occasions — once in large numbers on nu)ist brewer's grains in the troughs 

 in a cow-house; and once a single female on rotting vegetation near a 

 house on July 22nd. The majority of Diptera were Slomoxys calcitrant^, 

 Scatophaga, Borborus equinus and Limosina sp. 



On one farm it was very noticeable that when the cows were brought 

 in for milking in the afternoon they became very restless for the first 

 five minutes after entering their stalls, kicking and lashing their tails. 

 During this period no Stomoxys were to be seen in the sun on the cow- 

 house wall outside; but afterwards, when the cows had become quiet, 

 this wall was covered with Stomoxys freshly filled with blood. 



(C) M. dotnestica was not found. The majority of Diptera found 

 were Scatophaga sp., Sarcophaga sp., Stomoxys sp., Borboridae and 

 Anthoniyidae. 



(D) Most of these houses were examined too late in the season to 

 judge of fly prevalence in summer. One, examined on October 12th, had 

 Fannia canicidaris only. Traps set up in two derelict houses in Southery 

 Fen, where 30,000 acres had been under water for 9 months — June 3rd, 

 1915 to September 1915, and again from May 1916 to December 1916 — - 

 attracted 2 female M. domestica, 1 female Stomoxys calcitrans, 1 male 

 P. rudis and 4 C. erythrocephala. The last mentioned laid eggs on the 

 baits — human faeces, plums, milk and sheep's noses, which were placed 

 together in the same receptacle. 



Both houses were \ mile from the next derelict building; and one was 

 I and the other 2 miles from land. Two of the four C. erythrocephala 

 caught were found at the former house, the remainder at the latter. 



During the interval between the two floods search of the fields for 

 insect life resulted in finding only the larvae of Chironomomus, one 

 Syrphid larva and a boring beetle grub — the latter being found in a 

 post above water level. 



Earthworms were only found in straw stacks, where leech cocoons 

 were also found during the second flood. 



During the second flood large numbers of Capsids were seen on 

 isolated clumps of Willows surrounded by water. 



(E) Large numbers of 31. domestica were seen in farm houses during 

 the summer, and many were caught in them and in a few cottages in 

 October. On November 9th and 23rd a few were seen in the kitchen of a 

 farm house. 



5—2 



