186 MUSClDvE. 



prominent. Antennae reaching far beyond the epistoma; first and 

 second joints tawny, clavate ; second more than half the length of the 

 first ; third slightly tapering from the base to the tip ; arista testaceous. 

 Wings luteous, black at the base; discal transverse vein parted by 

 about twice its length from the prabrachial transverse, and by much 

 more than half its length from the border. Halteres black. Legs 

 piceous ; posterior tarsi tawny. 

 Not common. (E.) 



The following additional species of this genus have been re- 

 corded as British : 



1. arnica, Hal. 4. hyalinata, Meig. 



2. geniculata, F. 5. longipennis, Meig. 



3. atrimana, Mcq. 6. sordida, HaL 



Genus II. LONCHJEA. 



LONCH^A, Fal. Ortal. (1820); Meig.; Mcq. ; Zett. Muscay., F. 



Corpus breviusculum, nigrum vel metallicum. Antennas epistoma non 

 attingentes ; articulus tertius conicus, secundo longior ; sextus nudus. 

 Alts immaculate. 



Colour Hack or metallic. Body rather short and broad, with a few 

 hairs and bristles. Head as broad as the thorax, nearly hemispherical. 

 Front convex. Face vertical. Epistoma and peristoma not prominent, 

 the latter setose. Proboscis short. Antennce short, not reaching the 

 epistoma ; third joint conical, longer than the second ; sixth long, slen- 

 der, bare. Thorax a little longer than broad ; transverse furrow very 

 indistinct. Wings immaculate, of moderate length ; costa slightly con- 

 vex towards the base ; costal vein ending on the hind border at some 

 little distance from the tip of the wing ; subcostal ending beyond one- 

 third of the length ; mediastinal ending at about half the length ; radial 

 ending at seven-eighths of the length ; cubital and prsebrachial diverg- 

 ing between the transverse vsins, parallel from the discal transverse to 

 the border; discal transverse nearly straight and upright, parted by 

 much more than its length from the prasbrachial transverse, and by 

 much less than its length from the border. Male. Front narrow. Fern. 

 Ovipositor exserted. 



1. vaginalis, Fal. Ortal. 26. 2 (1820) ; Meig. ; Mcq.; Zett. Ni- 

 gro-casrulea, capite halteribus pedibusque nigris, facie albido-tomentosa, 

 alis limpidis. Long. H; alar. 4 lin. 



Blackish-blue. Head, halteres, and legs black. Face with whitish 

 tomentum. Wings limpid ; veins pale testaceous, blackish towards the 

 tips. 



Common. (E. S. I.) 



