LIST Or DIPTERA. 37 



40. Stratiomys eobusta. 



Foem. Nigra ; oculi testaceo ex parte marginati ; antennce capite 

 duplo longiores ;. scutellum margine postico spinisque flavis ; 

 abdomen crassum, rnarginibus vitta apicali ventreque flavis, hac 

 fasciis tribus abbreviatis nigris ; pedes flavi, femoribus nigris, 

 tibiis nigro cinctis ; alee fuscce, apice limpida ; halter es flavi. 



Fern. Black. Head testaceous about part of the eyes. An- 

 tennae about twice the length of the head ; first joint full six times 

 the length of the second. Thorax clothed with pale down ; hiud 

 border and spines of the scutellum yellow. Abdomen convex, very 

 thick, yellow along each side, and with a yellow stripe on the apical 

 segment ; under side yellow, with three broad black bands which are 

 much abbreviated on each side. Legs yellow ; femora black ; a 

 black band on each tibia. Wings brown, with limpid tips ; veins 

 piceous. Halteres yellow. Length of the body 5 lines; of the 

 wings 10 lines. 



a. North America. Presented by Sir Eoderick Impey Murchison. 



41. Stratiomys flaviceps. 



Nigra ; caput flavum, nigro varium ; antennce basi fulvce ; thoracis 

 latera et pectus flava, nigro maculata ; scutellum foeminae 

 flavum, maris margine postico flavo ,- abdomen maculis sex 

 lateralibus unaque apicali flavis ; pedes flavi, femoribus nigris ; 

 alee apud medium fuscescentes. 



Stratiomys flaviceps, Macq. Hist. Nat. Dipt. i. 245, 1. Guer. Icon. 



Regne Anim. Ins. Texte, 544. 

 Stratiomys coronata, Serv. ; Guer, Icon. Regne Anim. Ins. pi. 98 , 



f. 6. 



Philadelphia. 



42. Stratiomys Norma. 



Nigra ; vertex et scutellum subbadia ; abdomen maculis vittulisque 

 sulphureis ; pedes lutei ; alee fuscescentes. 



Stratiomys Norma, Wied. 



