LIST OF DIPTERA. 691 



Pkasia semicinerea, Meig. Dipt. iv. 199, 24. Hyalomyia semicine- 

 rea, Desv. Essai. Myod. 301, 11. Macq. Hist. Nat. Dipt. ii. 

 204, 11. 



a. England. 



Group IV. Meig. Dipt. iv. pi. 39, /. 16. Elomyia, Desvoidy. 



Phasia ornata, Meig. Dipt. iv. 202, 31. 



a. ? From Mr. Children's collection. 



Phasia argentifrons, n. s. Nigra, capite argenteo, antennis pedibus- 

 que nigris, alis nigro-fuscis margine postico subcinereis. 

 Body black : head covered with white silvery pile : eyes dark 

 red : peristoma tawny : feelers black : sides and underside of the 

 abdomen fringed with pale tawny hairs : legs black, clothed with 

 short black hairs ; claws and foot-cushions dull pale tawny ; tips of 

 claws black : wings dark brown, slightly gray along the hind bor- 

 ders; wing-ribs, veins and poisers black. Length of the body 2 

 lines ; of the wings 4 lines, 



a. Interior of South Africa. Presented by the Earl of Derby. 



Gymnosoma, Meigen. 

 Group I. Meig. Dipt. iv. 204, A. 



Gymnosoma rotundata, Fall. Rhizom. 9, 1. Meig. Dipt. iv. 204, 1, 



pi. 39, f. 21. vii. 207. Desv. Essai. Myod. 236, 1. Macq. Hist. 



Nat. Dipt. ii. 189, 1, pi. 15, f. 5. Zett. Ins. Lapp. 628, 1. 



Dipt. Scand. iii. 1226, 1. Musca rotundata, Linn. Syst. Nat. 



ii. 991. Faun. Suec. 1838. Gmel. Ed. Syst. Nat. v. 2846, 76. 



Fabr. Sp. Ins. ii. 442, 33. Ent. Syst. iv. 325, 57. Deg. Ins. 



vi. 15, 8, pi. \,f. 11. Geoff. Ins. \\. 509,32. S chaff. Icon. 



pi. 54, f. 8, pi. 143, /. 3. Panz. Faun. Germ. 20, 19. Rossi. 



Faun. Etrusc. 466, 1502. Schrank, Faun. Boic. iii. 2441. 



Don. Brit. Ins. xii. 83, pi. 424, /. 1. Stew, El. ii. 259. Turt. 



iii. 605. Lam. Anim. sans Verteb. iii. 362, 7. Tachina rotun- 

 data, Fabr. Syst. Anil. 311, 12. Ocyptera rotundata, Latr. 



Gen. Crust, iv. 344. Cons. Gen. 444. M. cerinus, Harr. Ex. 



36, pi. 9, /. 6. 

 a. England. 

 6. France. 

 e. South of France Presented by F. Walker, Esq. 



3 P2 



