262 SYRPHID.E. 



Black, clothed with black hairs. Head covered with tawny down. 

 Antennae ferruginous; fourth and following joints black. Scutellum 

 piceous. Wings almost colourless, with a large subquadrate. blackish 

 spot extending from the middle of the fore border to the disc, sb'ghtly 

 clouded with grey near the tips. Halteres tawny. Abdomen clothed 

 towards the tip with orange hairs. Var. /3. Thorax clothed with 

 tawny hairs. Abdomen clothed with whitish hairs, bare towards the 

 base, which has a tuft of pale tawny hairs on each side. 



The larva is fringed along each side with a double row of short 

 spines, and the tip of its abdomen has six />r four radii ; it has six 

 pair of tubercular feet, which much resemble those of Helophilus 

 pendulus ; each of them has three long claws. 



Generally distributed. (E. S. I.) 



Genus XIV. SERICOMYIA. 



SERICOMYIA, Mg. (1803) ; LI. ; St. F. et Srv. ; Mq. ; Ztt. ; Rdn. 

 Musca p., L. ; Dg. ; Gm. Syrphus p., Fb. ; Fin. ; Pz. 



Antennae articulo quarto dorsali, quinto plumato. Alee areola subapicali 

 Integra, lobo axillari distincto, venis subcostali et radiali ad marginem 



Body broad, convex, slightly hairy. Head rather flat in front ; 

 epistoma convex, with some scapulas prolonged below the eyes ; 

 peristoma oblong, narrow in front. Labrum stout, notched at the tip. 

 Lingua acute, as long as the labrum. Maxillae subulate, as long as the 

 palpi (S. mussitans), or but half their length (S. borealis). Palpi cylin- 

 drical, hairy, as long as the labrum. Labium semicylindrical. Antennas 

 4-jointed, porrect, nutant ; first and second joints small ; third patelli- 

 form ; fourth setiform, seated on the base of the third ; fifth plumose. 

 Wings lanceolate, finely pubescent, diverging ; alulaB double, fringed, 

 not quite covering the halteres ; subapical areolet entire ; axillary lode 

 distinct; subcostal and radial veins ending separately in the margin. 

 Abdomen elliptical. Legs rather stout. Male. Eyes contiguous. 

 Fern. Eyes remote. 



1. borealis, Fin. syrph. 20. 7 (1816); Mg. zw. iii. 343. 2. pi. 

 30. f. 9 ; Mq. ; Ztt. ; Lw. lappona, Dg. Nigra, capite piceo, anten- 

 nis scutelloque ferrugineis, alis cinereis basi et ad costam ferrugineis, 

 abdomine flavo-quadrifasciato, pedibus ferrugineis. Long. 6-8 ; alar. 

 12-16 lin. 



Black. Head piceous, covered in front with yellow down, which is 

 interrupted by a piceous shining scapula. Antenna and scutellum fer- 

 ruginous. Wings grey, ferruginous at the base and along the costa. 

 Halteres black. Abdomen with four slightly arched yellow bands ; hind 



