72 DURHAM DIPTERA. 



XII. 105. 



105. Empeda, O-Sack. 



1 (2). Bright yellow species. 



702. Empeda flava, Schum. 



Bishop Auckland, 1 $, 27-6-02; Hesleden, 1 $, 

 1-8-02. 



2 (1). Greyish species. 



703. Empeda nubila, Schum. 

 Bishop Auckland, 2^,2$, 23-5-02. 



106. Goniomyia, Steph. 



Life history unknown. 



I cannot give characters for the species of this genus. We 

 have at least two, of which I took $ and $ at Hesleden in 

 August, 1904, possibly tenella, Mg., and scutellata, Egg. 



108. Acyphona, O-Sack. 

 712. Acyphona maculata, Mg. 



Hesleden, 1 $, \ % August, 1902. 



109. Molophilus, Curt. 

 Life history unknown. 



1 (8) (11). Yellowish or orange brown species. 



2 (5). Entirely yellow species. 



3 (4). Male genitalia with two very small, almost hidden, 



black hooks. (7 1 3. ochracetis, Mg.) 



4 (3). Male genitalia with four long black processes. 



714. Molophilus appendiculatus, Staeg. 

 Brancepeth, Harperley, Hesleden, 4 $, 4 ?, June and 

 August, 1902. 



5 (2). Species brownish, especially on the abdomen. 



6 (7). Male genitalia with two short black processes beneath. 



715. Molophilus propinqims, Egg. 

 South Durham, 1 $, Brancepeth, 1 % 15-6-02; 

 Hesleden, 2 $, August, 1902. 



