SYRPHUS. 287 



Abdomen with five yellow bands ; first interrupted ; second and third 

 half interrupted or notched on the hind border ; fourth and fifth en- 

 tire. Legs luteous ; femora black towards the base ; hind tibias with 

 piceous bands ; tarsi piceous towards the tips. 



Yery rare. In Mr. Stephens' s and Mr. Desvignes' collections. 

 (E. I.) 



2. pyrastri, L. s. n. ii. 987. 51 (1767) ; Fb. ; Shr. ; Gm. ; Rsi. ; 

 LI. ; Fin.; Mg. ; Mq. ; Lw. ; Ztt. rosce, Dg. selenitica, Mg. ; Lw. ; 

 Ztt. unicolor, Ct. ! b. e. 509. Nigro-cyaneus, scutello subfulvo, alis 

 limpidis, abdomine albo- vel flavo-trifasciato, pedibus flavis femoribus 

 basi nigris. Long. 5^-7 ; alar. 11-14 lin. 



Blackish-blue, clothed with pale hairs. Head whitish, with a black 

 stripe in front. Maxillae more than twice the length of the palpi. 

 Palpi cylindrical, obtuse, extremely short. Antenna? piceous, tawny at 

 the base. Thorax with an indistinct tawny stripe on each side ; scu- 

 tellum dull tawny, more or less tinged with blue. Wings colourless. 

 Alula? white. Halteres luteous. Abdomen with three interrupted 

 whitish or yellowish bands, which are sometimes, but rarely, wanting ; 

 hind borders of the fourth and fifth segments whitish. Legs yellow ; 

 femora black towards the base ; hind femora black ; tarsi ferruginous. 



Generally distributed. (E. S. I.) 



3. grossularise, Mg. zw. iii. 306. 48 (1822); Mq. ; Lw.; Ztt. 

 erratica, L. ribesii, var. major, Fin. Viridi-a3neus, antennis nigris, 

 abdomine nigrofasciis quatuor rectis latis prima interrupta reliquis in- 

 tegris luteis, pedibus luteis, femoribus basi nigris. Long. 6 ; alar. 13 lin. 



Head yellow; vertex black; a triangular black spot about the ocelli. 

 Antenna black. Thorax aBncous-green, clothed with tawny hairs, 

 slightly tawny along each side ; scutellum tawny. Wings colourless ; 

 stigma pale brown. Alula? yellowish- white. Halteres yellow. Abdo- 

 men almost linear, black, clothed with black hairs, adorned with four 

 broad luteous bands, wldcli are clothed with tawny hairs ; first band in- 

 terrupted, forming a triangular spot on each side ; the other three entire, 

 linear, and parallel. Legs luteous; femora black at the base; anterior 

 tarsi ferruginous, luteous at the base ; hind tarsi brown, ferruginous at 

 the base. 



Rare. In Mr. Saunders's collection. (E. S. I.) 



4. ribesii, L. s. n. ii. 987. 50 (1767); Dg. ; Fb. ; Shr. ; Gm. ; 

 LI. ; Fin. ; Mg. ; Mq. ; Ztt. Viridi-a3neus, antennis piceis subtusfer- 

 rugineis, abdomine nigro fasciis quatuor rectis subangustis prima inter- 

 rupta secunda et tertia lemter emarginatis pedibusque luteis. Long. 

 4|-6; alar. 9-12 lin. 



Head yellow ; vertex a3iieous-green. Maxilla3 half the length of the 

 palpi. Palpi half the length of the labrum. Antennae piceous, ferru- 

 ginous beneath, tawny at the base ; fourth joint ferruginous. Thorax 

 reneous-green, clothed with tawny hairs, sometimes with a tawny stripe 



