ERISTALIS, 245 



brownish at the base ; alulae grey. Halteres piceous. I^egs black ; 

 tibiae white towards the base; tarsi piceous. Male. Abdomen ferru- 

 ginous, clothed with tawny hairs ; disc black towards the base. Fern. 

 Wings slightly clouded with brown beneath the middle of the costa. 

 Abdomen black, clothed with black hairs ; tip clothed with whitish 

 hairs. Yar. /3, mas. Thorax clothed icith blackish-broicn hairs. Ab- 

 domen black, with two large tawny spots on each side. Var. y,foem. 

 Tip of the abdomen clothed with tawny hairs. 

 Geuerally distributed. (E. S. I.) 



7. similis,Fln.d.s.syi-ph. 25.16(1816); Mg. ; Mq. ; Lw. ; Ztt. 

 — pertinax ? Spl. Piceus, scutello ferriigineo, abdoraine nujro segmen- 

 torum manjitdbus maculisque duabus lateraUbus basi fulvis, pedibus ni- 

 gris, tibiis basi tarsisque anterioribiis fulvis. Long. 6-7 ; alar. 12-14 lin. 



FiceoHs, clothed with tawny hairs. Head clothed on the crown and 

 above the antennae with black hairs. Antennae black. Disc of the 

 thorax clothed with ferniginous hairs ; scidellum ferruginous. Wings 

 colourless, slightly clouded with brown beneath the midcUe of the costa. 

 Halteres tawny. Abdomen black, with a very large triangular tawny 

 spot on each side beneath the fore border ; hind borders of the segvients 

 tawny. Legs black ; tibife towards the base, knees and anterior tarsi 

 tawny. Var. ^3. Wings quite colourless. Var. y. Wings much clouded 

 with brown. 



Generally distributed. (E. S. I.) 



8. nemorum, L.s.n.ii. 984.30 (1767); Em.; Gf.; Fb. ; Shr.; 

 lios. ; Gin.; LI.; Mg. ; Mq. ; Lw. ; Ztt. — arbustorum p., Phi. Fi- 

 ceus, fulvo-hirtus, scutello ferrugineo, abdomine nigra, segmentorum 

 marginibus posticis maculisque duabus lateralibus basi fnlvis, pedibus 

 nigris, tibiis basi tarsisque fulvis, tarsis posticis piceis. Long. 5-6 ; 

 alar. 10-12 lin. 



Ficeous, clothed with taicny hairs. Head covered with whitish down ; 

 a black scapula above the peristoma ; crown clothed v/ith black hairs. 

 Antennae black ; fourth joint tawny. Scutellum ferruginous. Wings 

 colourless, very slightly clouded with brown beneath the middle of the 

 costa. Halteres tawny. Abdomen black, with a large tawny triangu- 

 lar spot on each side near the base ; hind bordei's of the segments 

 tawny. Legs black ; tibiae towards the base and anterior tarsi tawny ; 

 hind tarsi piceous, ferniginous beneath. Var. /3. Wings quite colourless. 

 Var. y. Anterior tibiae tawny. 



Generally distributed. (E. S. I.) 



9. arbustorum, s. i. ii. 424. 15 (1775); Gm.; Shr.; Esi. ; Pz. ; 

 LI. ; Mn. ; Mg. ; Mq. ; Lw. ; Ztt. — horticola var., Dg. fig. Sch. i. e. 

 Ixxxi. 1. Fireus, fulvo-hirtus, thorace cinereo-Siibvittato , scutello ferru- 

 gineo, segmentorum marginibus posticis maculis(iuc duabus lateralibus 

 fulvis, pedibus nigris, tarsis intermediis tibiisque basi flavis. Long 5- 

 5i: alar. 11-12 lin. 



