LIST OF DIPTERA. 13 



Genus 5. ACTINA. 



Stratiomys, p., Forster. 

 Actina, p., Meig. Klass. Zweifl. 

 Xylophagus, p., Latr. 

 Beris, p., Meig. ; Macq. ; Loew. 

 Actina, Curt. Brit. But. 337. 



Palpi longi. Antennae subfusiformes, non stylatae ; flagellum 

 subconicum. Scutellum spinis armatum. 



Mediastinal vein ending at beyond half the length of the wing. 

 Subcostal ending at a little beyond the mediastinal. Kadial ending 

 at two-thirds of the length. First branch of the cubital straight or 

 slightly curved, and variable also in its length and in the angle 

 which it forms with the second branch, which ends at a little in front 

 of the tip of the wing. Praebrachial or first externo-medial ending at 

 a little behind the tip. Second and fourth externo-medial complete, 

 third abbreviated, or rudimentary. Subanal united to the anal at 

 some distance from the border. Discal veinlets forming two sides of 

 the hexagonal discal areolet. Median veinlet distinct. Humeral, 

 subcostal, mediastinal, radial, first cubital, second cubital, praebra- 

 chial, anal, axillary, subapical, discal, and three externo-medial 

 areolets complete, as are also the axillary and the subaxillary lobes. 

 Subapical areolet occupying the tip of the wing. 



1 . Actina tibialis. 



JEneo-viridis ; scutellum flavo spinosum ; abdomen nigrum ; pedes 

 Jlavi, iibiis posticis fuscis; alee subfuscescentes, ad costam 

 obscuriores. 



Beris tibialis, Meig. 



a—f. England. From Mr. Stephens' collection. 

 g. Chepstow. Presented by F. Walker, Esq. 



2. Actina opposita. 



Mas. Cyaneo-viridis,albo-tomentosa ; palpi flavi ; antennce fulvce, 

 apice nigra; scutellum spinis testaceis ; abdomen tesiaceum, 

 segmentorum mar ginibus posticis maculisque lateralibus trigonis 

 apiceque nigris ; pedes testacei, femoribus posticis apice fuscis, 

 tibiis posticis fulvo cinctis ; alee limpidce. 



C 



