lo 



^fr. .T. U. M;illucli un I'l.cotic Muscaiidas. 3Sl 



■>ost<?ro-ventral Rurfuce ; iiiiii-fi'iiiiir with 

 loiij,' stout bristles ou basal half niid a 

 coiub-likt' series of short setiil.-o on 



apical half of niitero-ventral surface ., ma culipennis, Stela. 

 Iliiij tibia with one bristle at midille ou 



fiostcro-veiitral surface ; mid-feiuur with 

 ong bristles on entire antero-vuntral 

 surtace niyricauda, Bigot. 



5. Ilinil tibia with an apical process on 



ventral surface 0. 



Hind tibia without an apical process on 

 ventral surface 8. 



6. Fourth abdominal tergite compressed and 



with a lobulifomi process in middle of 



Eosterior margin; hind tibia without 

 ristles on apical half of postero-ventral 



surface 7. 



Fourth abdominal tergite not produced 

 into a lobe at apex in centre ; hind tibia 

 with a few short bristles on apical half 

 of postero-ventral surface australis, sp. n. 



7. Fourth tergite with sparse bristles on sides, lubutu, Stein. 

 Fourth tergite with deuse bristles on ^ides. semiliUeu, Malloch. 



8. Small species, 3o mm. in length; sides of 



abdominal tergites 3 to 5 each with 



many long scale-liko bristles ; third 



antennal segment largely brownish .... mitmta, Malloch. 

 Larger species ; tergites without scale-like 



bristles 9. 



D. Humeri and apex of scutellum yellow; 



large species 7 mm. in length humeralis, Stein. 



Humeri and scutellum black or grey .... 10. 

 10. Mid-femur with long bristles on basal half 



and a comb-like series of short setulse 



on apicHl half of antero-ventral surface ; 



fourth tergite not compressed at apex 



above pariipuncta, Stein. 



Mid-femur without a comb-like series of 



setulic on apical half of antero-ventral 



surface; fourth tergite compressed at 



apex above immnculipeunis, Frey. 



Females. 



1. Femora almost entirely black ^orrw/a, "NVied. 



Legs yellow 2. 



2. Iluniori and apex of scutellum yellow .... humeralis Stein. 

 Humeri and scutellum black or grev , . , . 3. 



3. Only the basal abdominal t«rgite yellow. . a^ncalis, Schiner. 

 Abdomen almost entirely yellow, black- 

 spotted lutearms, Frev. 



Two basal abdominal tergites yellow .... immacuUinimii, Froy 



Pygophora aliena, sp. n. 



Male. — Similar to apicalis in colour. Black, densely pale 

 grcy-pruinesccnt ; froiis anteriorly, face, antennae, palpi, and 



