LIST OF DIPTERA. 881 



bristles at the base ; sides of the peristoma projecting- towards the 

 epistoma : eyes red, nearly meeting on the crown : sucker pitchy, 

 clothed at the tip with tawny hairs ; palpi black, beset with black 

 bristles : feelers pitchy, as long as the face ; third joint linear, 

 rounded at the tip, more than four times the length of the second ; 

 bristle dark tawny, longer than the third joint: chest green, bluish 

 on each side : abdomen obconical, golden-green, tinged with blue 

 towards the base : legs dark pitchy, clothed with black hairs and 

 bristles : wings colourless ; wing-ribs and veins pitchy ; tip cross- 

 vein forming an obtuse angle with the fourth longitudinal vein, al- 

 most imperceptibly inclined inward along the whole length, joining 

 the border at a short distance above the tip of the wing ; lower cross- 

 vein with two very slight curves, the lower short and inward, the 

 other outward and extending from the first to the tip ; scales white. 

 Length of the body 2\ lines ; of the wings 5 lines. 

 a. Galapagos. Presented by C. Darwin, Esq. 



Musca cuprea. Lu cilia cuprea, Desv. Essai Myod. 459, 27. 



a. France. 



b. ? 



Musca nigriceps. Lucilia nigriceps, Macq. Dipt. Exot. ii. 2 



143, 16. 

 a. Mexico. Presented by E. P. Coffin, Esq. 



Musca brunnipes? Lucilia brunnipes ? Macq. Dipt. Ent. ii. 2, 138, 



2, pi. 19, /. 5. 

 a. Isle of France. 



Musca Heraea, n. s., fern. Viridis, capite cyaneo-viridi, abdomine 

 mneo-viridi apice eeneo, antennis palpis pedibusque nigris, alls 

 subcinereis. 



Body clothed with a few black hairs and bristles : head bluish 

 green, silvery in front ; a pitchy stripe between the eyelets and the 

 feelers ; epistoma slightly prominent ; sides of the face fringed with 

 bristles at the base : eyes dark red ; fore part convex, its facets a 

 little larger than those elsewhere : sucker and palpi black : feelers 

 black, nearly as long as the face ; third joint linear, rounded at the 

 tip, more than thrice the length of the second ; bristle longer than 

 the third joint: chest green: abdomen brassy green, shorter and 

 broader than the chest, a little longer than broad, brassy towards the 

 tip : legs black, clothed with black hairs and bristles ; foot-cushions 

 pitchy : wings slightly gray ; wing-ribs and veins black ; tip cross- 

 vein joined by an outward curve with the fourth longitudinal vein, 



PART IV 4 H 



