348 INSECTA SAUNDERSTANA. 



MUSCA EXTItEMA. 



Cyaneo-viridis ; caput alhidum ; antenncB nigr<B ; pedes nigri, femoribus 

 viridibus ; alee sublhnpidce. 



Green, more or less varied with blue : head icith a slight ivhitish cover- 

 ing ; frontalia deep black, forked towards the back of the head ; epistoma 

 prominent : mouth, palpi and feelers black ; third joint of the feelers more 

 than twice the length of the second, reaching the epistoma : legs black ; 

 thighs green : wings almost colourless ; veins black, tawny at the base ; 

 prajbrachial vein forming a very shallow curve at its flexure, hardly inclined 

 inward from thence to its tip ; lower cross-vein almost straight ; alula 

 gray : halteres white. Length of the body 2j lines ; of the wings 5 lines. 



Van Dieman's Land. 



MuSCA STIPATA. 



Nigra ; caput album, nigro bivittatum ; thorax Jiavo-albo quadrivittatus ; 

 pectus canum ; abdomen aureo tessellatum, apice teslaceum vittisque 

 tribus nigris duabusque auratis ornatum ; alee subiimpidce. 



Black : head with a white covering ; crown with two broad black stripes ; 

 epistoma slightly prominent : mouth, palpi and feelers black ; third joint of 

 the feelers about thrice the length of the second, nearly reaching the epi- 

 stoma ; sixth pitchy : chest with four yelloivish-ivhite stripes, the side pair 

 interrupted : hind chest and breast hoary : abdomen tessellated with pale 

 gold-colour ; tip dark testaceous, with three slender black stripes betiveen two 

 broad pale gold stripes : legs black : wings almost colourless ; veins black, 

 tawny at the base ; praebrachial vein forming a very gentle curve at its 

 flexure, veiy slightly curved inward near the tip ; lower cross-vein curved 

 inward before the middle : alulce white : halteres tawny. Length of the 

 body 3^ lines ; of the wings 7 lines. 



Demeiara. 



MuscA vicAEiA, Fern. 



Cana; caput auratum, antice et subtus album; thorax nigro qua drivii- 



tatus ; abdomen subcinereum, basi ferrugineum, segmentis 2o et 3o 



trivittatis, Ao bivittato ; antenna; piceo! ; pedes nigri ; alcBsubcinerew. 



Black, tvith a hoary covering : head gilded above, white in front and 



beneath : frontalia black, broad, linear ; facialia without bristles ; epistoma 



