DIPTERA, 347 



feelers pilchi/ : disk of the under side of the abdomen dull testaceous u-ith a 

 Mack stripe : legs black : wings gray ; veins black ; praebrachial vein form- 

 ing a gentle outward curve beyond its flexure, very slightly inclined inward 

 near its tip which is very near the tip of the cubital vein ; lower cross-vein 

 almost straight, but with indications of the two usual curves : alulae whitish 

 with yellowish boi'ders. Length of the body 3| lines; of the wings 8 lines- 

 Senegal ? 



MUSCA BASALIS. 



Cyaneo-viridis ; caput argeuteum, antice fcrruginciim ; thorax antice canus ; 

 abdomen subtus fusco bivittatum ; antenna f err uginece, basifulva;; 

 pedes nigri ; alec subcinerea. 



Bluish-green : head adorned with a silvery white covering, ferruginous in 

 front ; epistoma not prominent : mouth black ; palpi lutcous : feelers tawny ; 

 third joint ferruginous, full twice the length of the second, almost reaching 

 the epistoma; sixth joint black, tawny at the base : front of the chest with 

 a hoary tinge : under side of the abdomen with two broivn stripes on the 

 disk : legs black : wings pale gray ; vjeins black, tawny at the base ; pra;- 

 brachial vein forming a very gentle curve at its flexure, almost straight 

 from thence to the tip ; lower cross-vein with two slight curves : alulae 

 white. Length of the body 3^ lines ; of the wings 8 Hues. 



Jamaica. 



MuscA occiDENTis, Fem. 



Cyaneo-viridis ; scutum postice purpurea varium ; scutellum et abdomen 

 viridi-cyanea ; antenna: et pedes nigra ; alie subcinerece. 



Bluish-green : head with " ".AeVc scrfpe on each side in front along 

 ih^ c_yc, noniaha, palpi and feelers black : hind part of the shield tinged 

 ivith purple : scutcheon and abdomen greenish-blue : legs black : wings very 

 slightly gray ; veins black, tawny at the base ; praebrachial vein forming a 

 gentle curve at its flexure, very slightly bent inward near the tip ; lower 

 cross-vein slightly bent inward in the middle : alulEe white : halteres yellow. 

 Length of the body 3^ lines ; of the wings 7 lines. 



United States. 



