DURHAM DIPTERA. 243 



XXXII. 446. 



2 (1). Jowls black with red hairs. 



1 93 1. Calliphora vomitoria, L. 

 Common, but not nearly so abundant as the pre- 

 ceding. 



447. Euphoria, Dsv. 



1932. Euphoria cornicina, F. 

 Not uncommon, and generally distributed. 



448. Lucilia, Dsv. 



Larvae in animal matter, fresh or putrifying. Too common 

 as maggots on sheep. 



1 (10). Palpi yellow or orange. 



2 (3). Third antennal joint only about three times as long 



as the second ; facial bristles extending the whole 

 length of facialia ; general colour, blackish green ; 

 trace of a dark thoracic stripe. (1942. regina, Mg.) 

 8 (2). Third antennal joint four times as long as the second ; 

 facial bristles only extending half way up the 

 facialia ; general colour, gold or blue-green, with- 

 out a trace of a dark thoracic stripe. 



4 (9). Male frons very narrow, eyes touching behind. 



5 (6). Thorax with white dusting in front ; abdomen 



shimmering white in certain lights. 



(1939. nobilis, Mg.) 



6 (5). Thorax very slightly dusted ; abdomen without any 



white shimmer. 



7 (8). Face only red in the middle and about the mouth. 



1933. Lucilia ccesar, L. 

 Abundant everywhere. It is the commonest of the 

 bright metallic flies, and varies much in colour. 



8 (7). The red extending over the cheeks. 



1936. Lucilia ruficeps, Mg. 

 Bishop Auckland, 1 $ and 1 ?, June, 1900. 



