i86 



Records of the Indian Museum. 



[Vol. XIII, 



q. Apical clII widely open - 



Apical cell closed or very narrowly open 



10. F"acial carina rather narrow; male frontalia 



broadly present throughout 

 Facial carina broad, tubercular, fading below ; 

 male frontalia pinched out ... .*. . 



11. Arista bare or at most only microscopically 



pubescent 

 Arista plumose or long-pubescent, ciliate above 

 and below 



12. Facial carina weak but distinct 

 Facial carina quite absent 



13. Apical cell widely open 



Apical cell closed or very narrowly open 



14. Disk of mesoscutum with macrochaetae 



Disk of mesoscutum without macrochaetae ; 

 male scutellum greatly swollen, far over- 

 reaching the base of abdomen ... 



15. Preacrostichals present , frontals descending 



below base of antennae (see note below) 



No preacrostichals ; frontals stopping at base 

 of antennae 



i6. No discals on anal segment 



Erect or suberect, short or long discals on anal 

 segment, at least laterally 



17. Epi-stoma very narrow ; hypopygium of mode- 



rate size.. . 

 Epistoma not unusually narrowed ; hypopygia 

 of both sexes greatly enlarged .. 



18. Fourth vein evenly rounded at bend, more or 



less like that of J///5c/»rt 

 Fourth vein not evenly rounded (see S. viri- 

 dana, sp. n. ) 



19. Arista pubescent about two-thirds way 

 Arista plumose practically to tip ... 



20. Facial carina absent ... 

 Facial carina present ... 



21. Epistoma of ordinary width 



Epistoma very narrowed 



22. Epistoma very broad ... 

 Epistoma narrow 



23. Short straight erect spines on scutellum 



No spines on scutellum 



24. F"acial carina narrow, sharp 

 F'acial carina rather broad, flattened 



25. Lateral discals on all abdominal segments 

 Lateral discals not present on all segments ... 



Stonioyliina, Rdi. 

 10 



Id i el la, B. B. 



Eitidiella, gen. nov. 



12 



16 

 Metallea, Wulp. 



13 



14 



15 

 Tric/io)netallea,gen. nov. 



Stegosoma, Lw. — Africa. 



Rhyncomya, R. D. — 

 Mediterranean Region. 



Rhynchomyiopsis, gen. 

 nov. 



18 

 T/ioracifes, B. B. 

 Chlovoidia, gen. nov. 

 Stro}igyloneur(i, Big. 



19 



Mefalliopsis, gen. nov, 



20 



21 



22 

 Syiiaviphoiieiiropsis, gen. 



nov. 

 Nitellia. R. D. — Europe. 



23 



Apolleuin, Bezzi. — .\f- 



rica. 

 Thelychaeta, B. B. 

 Pollenia. R. D. 



25 

 Dexopollenia, gen. nov. 

 Pollein'opsis, gen. nov. 



NOTES. 



Rhyncomya, R. D. — The characters in the table are drawn 

 from impavida, Rossi (syn. columbina, Meig.). The genotype is 

 Musca ruficeps, Fab., with which impavida seems to be congeneric. 

 The main characters of impavida are : Facial carina absent ; epis- 

 toma rather PAasm-like, broad and rather strongly protuberant; 

 arista microscopically pubescent; apical cell very narrowly open, 

 almost closed; male eyes nearly contiguous, frontalia pinched out; 

 male hypopygium rather large, claws not very long ; bristles on 



