ERISTALIS. 247 



Piceoiis, clothed with dark tatovj hairs. Head covered in front with 

 wliitisli down ; a black shining scapula above the peristoma. Antennae 

 black. Scidellum ftrriKjinom. Wings colourless, slightly tinged with 

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

 tawny. Abdomen black ; each segment with an (eneous band ; hind borders 

 tawny. Legs black ; tibirs and middle tarsi yellow totoards the base. 

 Var. j3. 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. ; Gra. ; 

 Schf. ; Pz. ; Rsi.; LI. ; Fin.; Mg.; Mq. ; ZH.—atropos, Shr.; Gm. 

 Niger, thorace cano-trivittuto, sciitello ferrugineo, abdominis segmentorum 

 marginibus posticis fiavis laterihus flavo-lrimaculatis, tibiis Jlavis apice 

 nigris. Long. 6 ; alar. 12 lin. 



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

 which is interrupted Ijy a black shining stripe. Thorax v-ith 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 yelloic spots on each 

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

 aiul tibife yellow, the latter black towards the tips. 



Generally distributed. (E, I.) 



Genus VL HELOPHILUS. 



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

 Lw. Musca p., L. ; Dg. ; Shr. Syiphus p., Fb. ; Pz. ; Fin. EristaUs 

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



Epistoma elongaturn, tuberculatum. Antenna capite transverso conjunc- 

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

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

 apicali Integra ad medium contractu, lobo axillari distincto, venis sub- 

 costali et radiali ad marginem disjunctis, vena transversa prcebrachiali 

 ultra areolae discalis medium locata. 



Body broad. Head semicircular; epistoma somewhat compressed, 

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

 stoma 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 labnmi. Max- 

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

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

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

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

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



