OETALIS. 197 



parted by much more than its length from the prsebrachial transverse. 

 Halteres whitish. Legs piceous; tarsi ferruginous. 

 Generally distributed. (E. S. I.) 



6. syngenesis, F. S. I. ii. 454. 101 (1781); Gmel. ; Latr. ; 

 Meig. ; Mcq. ; Zett. urticce, Schr. juncorum, Fal. herbarum, Desv. 

 Nigro-viridis, capite ferrugineo, antennis piceis, alis limpidis nigro-fusco- 

 quadrifasciatis, pedibus nigris, tarsis basi ferrugineis. Long, li-1^ ; 

 alar. 2-2 lin. 



Blackish-green, shining. Head ferruginous. Antennae piceous ; third 

 joint long-conical, slightly pointed, full thrice the length of the second. 

 Wrings limpid, varied with blackish-brown, which forms a stripe in front 

 at the base, a spot at the tip, and two intermediate bands, which cover the 

 transverse veins ; radial vein ending at a little beyond three-fourths of 

 the length of the wing ; cubital and prsebrachial veins diverging be- 

 tween the transverse veins, parallel from the discal transverse to the 

 border ; discal transverse straight and upright, parted by less than its 

 length from the prsebrachial transverse, and by hardly half its length 

 from the border. Halteres and legs black ; tarsi ferruginous towards 

 the base. 



Not rare. (E. S. I.) 



7. vibrans, L. Fn. 1867 (1761); D. G. ; F. ; Schr.; Gmel.; 

 Ross.; Latr.; Fal. ; Meig.; Mcq.; Zett.; Geoff. Atra, capite rufo, 

 antennis fulvis, alis limpidis apice nigro-fuscis, tarsis posterioribus genu- 

 busque ferrugineis. Long. 3 ; alar. 6 lin. 



Deep black, shining. Head bright red, tawny in front, with white 

 tomentum about the eyes. Epistoma prominent. Antennae tawny ; 

 third joint conical. Wings limpid, with a blackish-brown spot at the tip, 

 and another between the subcostal and mediastinal veins ; mediastinal vein 

 ending at far beyond half the length of the wing ; cubital and prsebra- 

 chial veins diverging between the transverse veins, slightly converging 

 from the prsebrachial transverse to the tip ; radial ending at much be- 

 yond eleven-twelfths of the length ; discal transverse indistinctly inclined 

 outward, parted from the prsebrachial transverse by a little more than 

 twice its length, and from the border by about half its length. Hal- 

 teres luteous. Knees and posterior tarsi ferruginous. 



GeneraUy distributed. (E. S. I.) 



The following additional species of Ortalis have been recorded 

 as British : 



1. marmorea, F. 6. afflicta, Meig. 



2. guttata, Curt. 1. luctuosa, Meig. 



3. ornata, Meig. 8. lacustris, Meig. 



4. nigrina, Wied. 9. oscillans, Meig. 



5. lugubris, Meig. 10. paludum, Fal. 



