EEISTALTS. 247 



Piceous, clothed with dark tawny hairs. Head covered in front with 

 whitish down ; a black shining scapula above the peristoina. Antennae 

 black. Scutellum ferruginous. Wings colourless, slightly tinged with 

 brown along the fore border from the base to the middle, Halteres 

 tawny. Abdomen black j each segment with an aeneous land ; hind borders 

 tawny. Legs black ; tibia and middle tarsi yellow towards the base. 

 Var. (3. Hind borders of the abdominal segments hoary. Var. y. Second 

 abdominal segment with a triangular tawny spot on each side. 



Generally distributed. (E.) 



13. floreus, L. s. n. ii. 984. 29 (1763); Dg. ; Fb.; Shr. ; Gm. ; 

 Schf. ; Pz. ; Rsi.; LI.; Tin.; Mg.; Mq. ; Ztt. atropos, Shr.; Gm. 

 Niger, thorace cano-trivittato, scutelloferriigineo, abdominis segmentorum 

 marginibus posticis flams lateribus flavo-trimaculatis, tibiis flams apice 

 nigris. Long. 6; alar. 12 lin. 



Black, clothed with yellow hairs. Head covered with yellow down, 

 which is interrupted by a black shining stripe. Thorax with three hoary 

 bands ; scutellum ferruginous. Wings slightly grey, tinged with pale 

 brown along the costa for more than half the length from the base. 

 Halteres yellow. Abdomen with three transverse yellow spots on each 

 side ; first pair very large ; hind borders of the segments yellow. Knees 

 and tibiae yellow, the latter black towards the tips. 



Generally distributed. (E. I.) 



Genus VI. HELOPHILUS. 



HELOPHILUS, Mg. zw. iii. 368 (1822) ; St. F. et. Srv. ; Mq. ; Ztt. ; Ct. ; 

 Lw. Musca p., L. ; Dg. ; Shr. Syrphus p., Fb. ; Pz. ; Fin. Eristalis 

 p., Fb. Elophilus p., Mg. kl. ; LI. 



Epistoma elongatum, tuberculatum. Antenna capite transverso conjunc- 

 tim breviores, articulo quarto dor soli, quinto nudo vel pubescente. Scu- 

 tellum sat convexum, margine non bene determinato. Alee areola sub- 

 apicali integra ad medium contracta, lobo axillari distincto, venis sub- 

 costali et radiali ad marginem disjunctis, vena transversa prabrachiali 

 ultra areola discalis medium locata. 



Body broad. Head semicircular; epistoma somewhat compressed, 

 elongated and tuberculated, slightly rostrate in some species; peri- 

 stoina oblong. Eyes bare, parted. Labrum short, rather long, more 

 slender towards the tip, which has five narrow lobes. Lingua lanceo- 

 late, acute, with a ridge along the middle, as long as the labmm. Max- 

 illae subulate, curved upwards, shorter than the lingua, as long as the 

 palpi. Palpi cylindrical, curved upwards, obtuse, beset with short 

 bristles towards the tips. Labium large. Antenna 5-jointed, porrect, 

 nutant, seated on a little tubercle in front, jointly shorter than the 

 breadth of the head ; first and second joints small ; second cyathiform, 



