LIST OF DIPTERA. 221 



Thereva taeniata, Meig. Dipt. ii. 120, 6. Loew, Prog. 1840, 10. 

 Gim. Bull. Soc. Imp. Nat. Mosc. 1847, 1, 202, 5. 



a. England. 



b. France. 



Thereva anilis, Meig. Dipt. ii. 125, 16. Macq. Hist. Nat. Ins. i. 

 420, 10. Loew. Prog. 1840. Zett. Ins. Lapp. 524, 8. Dipt. 

 Scand. i. 209, 9. Gim. Bull. Soc. Imp. Nat. Mosc, 1847. xx. 

 1,204,12. Musco anilis, Linn. Faun. Suec. 1791. Gmel. Ed. 

 Syst. Nat. v. 2832, 20. Bibio flavipes, Fabr. Ent. Syst. iv. 

 254, 3. Syst. Anil. 67, 4. Meig. Klass. Zweif. i. 215, 6. 

 B. anilis, Panz. Faun. Germ. v. 23. Meig. Klass. Zweif. i. 215, 

 6. Fall. Dipt. Suec. Anthrac. 5, 3. B. sordida, Panz. Faun. 

 Germ, xcviii, 19. 



a. England. 



b. France. 



Thereva annulata, Meig. Dipt. ii. 126, 17. Loeiv. Prog. 1840, 4. 

 Zett. Dipt. Scand. i. 210, 10. Gim. Bull. Soc. Imp. Nat. 

 Mosc. 1847. xx. 1,205, 13. Bibio anilis, Fabr. Sp. Ins. ii. 

 413, 8. Ent. Syst. iv. 255, 9. Syst. And. 68, 13. Schrank. 

 Faun. Boic. iii. 2371. Meig. Klass. Zweif. i. 215, 6. B. an- 

 nulata, Fabr. Syst. Anil. 68, 11. Fall. Dipt. Suec. Anthrac. 5, 

 4. Thereva anilis, Latr. Gen. Crust, iv. 296. 



a. France. 



Thereva cincta, Meig. Dipt. ii. 117, 2. 

 a. Ukraine. Presented by Dr. Dowler. 



Thereva varia, n. s., fern. Fusca, subtus cinerea, abdomine fulvo 

 fasciis canis, antennis canis apice nigris, pedibusfulvis,femorum 

 tibiarum tarsorumque apicibus nigris, alis subcinereis. 



Head black and clothed with black hairs, hoary with a tawny 

 tinge in front, thickly clothed with white hairs beneath : feelers 

 hoaiy with a very slight tawny tinge, black at the tips : mouth 

 black, and clothed with black hairs : chest brown, with yellow hairs : 

 breast gray, with hairs of the same colour : abdomen very dark taw- 

 ny, covered with a white bloom, and clothed with white hairs: fore 

 borders of the segments hoary ; under-side gray, with a tawny spot 

 on each side of every segment : legs tawny, clothed sparingly with 

 black bristles ; tips of the thighs, of the shanks and of the joints 

 of the feet black : wings slightly gray, darker and with a brownish 

 tinge along the fore border ; brands brown ; veins piceous ; cross- 



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