82 THE SCOTTISH NATURALIST 



Family Anthomyidae. 

 LimnopJiora septcnuiotata^ Zett., 234 $ . 



Family Muscidae. 

 Pyrellia eriophthalvia, Macq., 4 ? , 2 $ . 

 Muscina stabulajis, Fallen, 2 5 . 



Calliphoi'a {Protocalliphord) groenlandica^T,^\\..} i $. 

 Pollenia rudis, Fabr., i ? . 



The " small flies " of the preceding account proved to be 

 all Lininophora septemnotata, the " larger flies " being repre- 

 sentatives of the four Muscids above named. 



A second inspection of the large bedroom on the second 

 floor was made on 7th March, when it was found that 

 although so many flies had been collected there a fortnight 

 previously, a considerable number had gathered on the 

 window and on the floor below the window. These had 

 probably emerged from various crevices or from behind the 

 furniture, where they were resting unnoticed at the time of 

 my previous visit. All these flies were females of Liinnophora 

 septeinnotata except two — -one Muscina stabulans $ , and one 

 Calliphora grcenlandica^ ?. It will be noted that no 

 specimens of the Common House-fly were present in the 

 collections, 



I have made careful inquiries regarding the occurrence of 

 flies in this house in previous years, and find that in all the 

 four rooms referred to above LiuinopJiora septeinnotata has 

 been present in dense swarms during the past autumn, and 

 that this fly has been troublesome to a greater or less extent 

 in these rooms during the last sixteen years. The flies 

 invaded the rooms in September and October, but have 

 generally disappeared (or practically so) by the end of 

 November ; but during the last four )-ears they have persisted 

 in the rooms throughout the winter, and this year apparently 

 in larger numbers than previously. Only the rooms with a 

 southern aspect are affected, and of these the large bedroom 



1 Both these specimens are peculiarly sombre in their colouring, but 

 Mr Grimshaw has kindly examined them, and assures me that they are 

 ^y.'a.vci'^X^'i g{ C. groenlandica. I am also indebted to Mr Grimshaw for 

 help in regard to other specific determinations. 



