LIST OF D1PTERA. 585 



Syrphus Ortas, White, Zool. Voy. Erebus and Terror. Fem. — 

 JEneo-viridis, capite cyaneo, scutello fulvo, abdomine nigro, fas- 

 ciis quatuor interruptis flavis, antennis piceis, pedibus fulvis, tar- 

 sis pedibusque posticis piceis, alis limpidis. 



Head blue, clothed with black hairs, covered in front with pale 

 yellow down : mouth black : feelers piceous, ferruginous at the 

 base ; bristle black : chest brassy green, clothed with tawny hairs ; 

 scutcheon tawny : breast hoary, clothed with white hairs : abdomen 

 deep black, thinly clothed with black and whitish hairs, adorned 

 with four yellow bands, which are interrupted along the mid-back, 

 especially towards the tip : legs tawny, clothed with whitish hairs ; 

 feet and hind legs pitchy : wings colourless ; wing-ribs and poisers 

 tawny ; veins black. Length of the body 4^ lines ; of the wings 8 

 lines. 



a. New Zealand. Presented by Dr. Sinclair. 



Syrphus Damastor, n. s., fem. JEneus, scutello fulvescente, abdo- 

 minis nigri fasciis quatuor plus minusve interruptis fulvis^ an- 

 tennis ferrugineis, pedibus fulvis, tarsis pedibusque posticis 

 fuscis, femoribus inter mediis basi nigris, alis limpidis. 



Allied to S. scutatus. Head clothed with whitish down, except- 

 ing the crown, where it is black and shining; there is a tawny spot 

 at the base of the feelers, which are ferruginous : eyes red : chest 

 brassy, clothed with short hoary hairs ; breast gray ; scutcheon with 

 a tawny tinge: abdomen black, with four interrupted tawny bands; 

 the second and the third bands are in some cases entire, and then 

 their hind borders are angular : legs tawny ; feet and hind legs 

 tinged with brown ; middle thighs black towards the base : wings 

 colourless ; wing-ribs and poisers tawny ; veins black, tawny to- 

 wards the base. Length of the body 4 lines ; of the wings 8 

 lines. 



a. New Holland. Presented by J. Hunter, Esq. 



b. West Australia. From Mr. Clifton's collection. 



Syrphus Agrolas, n. s., fem. Nigro-cyaneus, abdominis nigri macu- 

 lis quatuor magnis fulvis, antennis ferrugineis, pedibus fulvis, 

 femoribus pedibusque posticis fuscis, alis subcinereis. 



Body bluish black, clothed with short tawny hairs : feelers fer- 

 ruginous, their bristles black : eyes red : abdomen black, adorned 

 with four large tawny spots, which occupy nearly all the breadth, 

 and about half the length from the base of the third and the fourth 

 segments ; the hind borders of these spots are somewhat narrower 



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