LIST OF DIPTERA. 1U77 



lower basal cross-vein slanting towards the base of the wing till it 

 approaches the sixth longitudinal vein, which, forming a right angle, 

 it accompanies in a waving line towards the hind border ; middle 

 cross-vein oblique, having two curves, the lower outward, shorter, 

 and more distinct than the other, which is inward ; lower cross-vein 

 slightly oblique, nearly straight, parted by rather more than its 

 length from the middle cross-vein, by twice its length from the tip of 

 the wing, and by hardly one-fourth of its length from the hind bor- 

 der ; poisers pale yellow, tawny at the base. Length of the body 3 

 lines ; of the wings 6 lines. 



Platycephala, Fallen. 



Platycephala umbraculata, Meig. Dipt. vi. 26, 2. Macq. Hist. 



Nat. Dipt. ii. 427, 2. Musca umbraculata, Fabr. Ent. Syst. 



iv. 348, 148. Oscinis umbraculata, Fabr. Syst. Anil. 215,2. 



Platycephala agrorum, Fall. Oscinid, 2, 2. 

 a. England. Presented by J. C. Dale, Esq. 



Sepedon, Latreille. 



Sepedon sphegeus Fall. Sciom. 2, 1. Meig. Dipt. vi. 28, 1. Macq. 

 Hist. Nat. Dipt. ii. 363, 1, pi. 17, f. 16. Zett. Dipt. Scand. v. 



2120, 1. Syrphus sphegeus, Fabr. Sp. Ins. ii. 429, 40. Ent. 

 Syst. iv. 298, 72. Mulio sphegeus, Fabr. Ent. Syst. Snppl. 

 559, 9. Panz. Faun. Germ. 77, 21. Baccha sphegea, Fabr. 

 Syst. Antl. 199, 1. Scatophaga rufipes, Fabr. Syst. Anil. 207, 

 18. Musca sphegea, Gmel. Ed. Syst. Nat. i. 5, 2873, 351. 

 Stew. El. 265. Turt. iii. 646. M. flavipes, Schrank, Faun. 

 Boic. iii. 2458. Mulio dentipes, Schell. Mouch. pi. 16. Musca 

 rufipes, Panz. Faun. Germ. 60, 23. M. simulator, Harr. Ex. 

 152, pi. 45, /. 77. Sepedon palustris, Latr. Hist. Nat. Cr. xiv. 

 386. Gen. Crust, iv. 350. Cons. Gen. 444. S. Pseudo-acori, 

 Desv. Essai Myod. 677, 1 . 



a. England, 



b. France. 



Sepedon Hseffneri, Fall. Sciom. 3, 2. Meig. Dipt. vi. 29, 2, pi. 56, 

 f. 22. Macq. Hist. Nat. Dipt. ii. 363, 3. Zett. Dipt. Scand. v. 



2121, 2. S. aquaticus, Desv. Essai Myod. 678, 4. S. ferrugi- 

 gineus, Leon-Dufour, Ann. Sci. Nat. xxx. 10, 12, pi. 17, f. 7. 



a. England. 



5 A 3 



