192 LIST OF DIPTERA. 



the ring is colourless ; poisers tawny. Length of the body 3| lines ; 

 of the wings 7 lines. 



a. Para. Presented by Mrs. J. P. G. Smith. 



Silvius, Meigen. 



Silvius vituli, Meig. Dipt. ii. 27, I, pi. 13, f.%— 13. Macq. Hist. 



Nat. Dipt. i. 213, pi. 5, /. 7. Blanch. Hist. Nat. Ins. iii. 590. 



£im. Bull. Soc. Imp. Nat. Mosc. 1847, 1, 179. Tabanus itali- 



cus, Fabr. Sp. Ins. ii. 457, 15. Ent. Syst. iv. 367, 21. Syst. 



And. 98, 24. Meig. Klass. Zweif. i. 172, e. T. vituli, Fabr. 



Syst. And. 97, 19. 

 a. Italy. From Dr. Leach's collection. 



Silvius denticornis, Wied. Auss. Zweif. i. 111,2. 

 a. South Africa. Presented by Dr. A. Smith. 



Silvius isabellinus, Wied. Auss. Zweif. i. 1J2, 3. 

 a. Ohio. Presented by the Entomological Club. 



Silvius (?) fusconiger, n. s., mas. Fuscus, thorace fulvo trivittato, 

 abdomine nigro nitente, pedibus piceis, alis subfuscis. 



Head brown, clothed behind and beneath with long pale tawny 

 hairs, and having a few piceous hairs in front : eyes and feelers pi- 

 ceous : mouth ferruginous ; sucker black : chest brown, clothed on 

 each side with long pale tawny hairs, and having three indistinct 

 very narrow pale tawny stripes remote from each other on the back : 

 abdomen black, shining, clothed thinly on each side with pale tawny 

 hairs : legs piceous : wings pale brown ; veins ferruginous ; poisers 

 piceous. Length of the body 8 lines ; of the wings 16 lines. 



a. Port Stephen, New Holland. Presented by the Earl of Derby. 



b. New Holland. Presented by J. Hunter, Esq. 



This species will perhaps form a new genus. 



Silvius (?) personatus, n. s., fern. Ftiscus, thorace fulvo univittato 

 alboque quadrivittato, pectore cano, abdomine fasciis fulvis albis- 

 que, antennis pedibus ferrugineis, alis fusco quadrimaculatis 

 aut interurupte fasciatis. 



Body brown : head tawny, white along the rims of the eyes, 

 and thickly clothed beneath with white hairs ; hind part hoary : 

 feelers and mouth tawny : chest with a tawny stripe on the back, 

 and with two white stripes on each side, the latter joined together 

 by two oblique bands between them : breast hoary, thickly clothed 

 with pale yellow hairs : abdomen with two bands on each segment, 



